One spare isn’t enough

“This day is really improving,” said Lisa with a big smile on her face as I rolled Warbler’s wings level and entered the downwind for Runway 8.

But that ear-to-ear smile was not to last.

Now, for background, you need to know that Tess, when it comes to maintenance, has become nearly as much trouble as a Warbird. Yeah. She’s “down.” Again. I would’a thought that for a woman of her age hot flashes would be a thing of the past, but just days out of that killer annualearlier this summer, she began to overheat. Big time.

I’ll spare you the pain of the details, and myself the PTSD of recounting this latest woe, but the bottom line is that two of her four nearly-new cylinders have to be pulled off. According to my logbook, I took her to her new shop about six weeks ago, and it’s likely to be several more weeks before she’s back in my hands (or I’m back in hers, as the case may be).

But that said, my logbook is hardly empty of Ercoupe time since. In fact, I’ve been flying a lot. How can that be? Well, the “family” has a spare airplane.

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Yep. I’ve been flying with my buddy Lisa as the safety pilot in her plane, helping her polish her skill set prior to her next round of formal training. Actually… Come to think of it, Lisa’s skill set has become so polished that I haven’t had to touch the controls in… well, I can’t remember how long it’s been. But each time we fly, she’s kind enough to let me take the controls at some point so that I can feel like a real pilot again.

Most days, after Lisa flies, Rio takes over the left seat and we go up and polish the maneuvers that his flight instructor is teaching him as well. We had been doing Rio’s training in Tess, but with her in the Airplane Hospital again, Lisa loaned him the keys to Warbler.

We all started joking that it’s a good thing we have a spare airplane. But as it would turn out, one spare Ercoupe isn’t enough. And that’s why Lisa lost her smile.

So much for background. Now on to today’s Plane Tale…

 

We rose early—me from the master suite and Lisa from the guestroom—and met at the coffee pot, bleary-eyed. We aren’t morning people either of us, but the early morning sky favors flight training. Winds tend to be light, and thermal turbulence from the sunbaked landscape hasn’t started to form yet. But today, it was clearly a waste of blissful sleep. A quick look out the window showed that the weather was not as forecast.

You can’t trust weathermen and psychics.

Still, we’ve learned that the weather at my house (which is 20 miles closer to the field than Lisa’s, hence the use of the guestroom on flying days) and the weather at the airport can be so different as to be in alternate universes, so properly caffeinated, we headed out.

Headed out into weather that grounded the crows that live on the airport beacon tower next to the hangers.

So instead of pre-flighting Warbler, we dumped the trash in the terminal, restocked the fridge and the snack baskets, and looked to see how many new pins had been placed in the large flight planning chart on the wall, the one that visiting pilots are invited to mark their home airports on. Then we hung out in Lisa’s hangar, mine being empty. She also has windows that look out to the East, allowing me to keep one eye on the weather while surfing the internet on my flight pad.

As the sky began to lift the wind came up.

“You know what?” said Lisa, “this isn’t happening for me today. But if you want to fly for a change, I’d be happy to come along for a ride.” She dangled Warbler’s keys in front of my face.

If there’s a pilot who can turn down an offer like that, I’ve never met him. Or her.

I had planned to do a toilet paper chase after Lisa’s practice. That’s where you fly up to around 10,000 feet, chuck a roll of (fully biodegradable) toilet paper out of the plane (over and empty area) then dive on the streamer and try to cut it with your wing as it flutters to the ground. It’s easier said than done, but every bit as much fun as it sounds. And I’ve actually succeeded at doing it.

The ceiling was starting to break up, so I chucked a roll of toilet paper in the back and up we went. It felt strange to be in Warbler’s left seat.

But as we climbed into the murky air, it was clear that this was not a day to venture up to 10,000 feet. I opted for barnstorming instead. Low and slow down on the deck we zipped between sandstone buttes, circled the ruins of abandoned ranch houses, and did lazy S-turns up and down empty dirt roads to nowhere—soaking in the view and the feel of flight.

Our RMP was acting up a bit, first high, then low. I didn’t give it much thought. Warbler has a new throttle and I figured that we didn’t have the friction lock set right yet.

I figured wrong.

“Thanks for letting me take the left seat,” I told Lisa.

“Actually,” she said, “I’m enjoying being a passenger for a change. Over here is where I fell in love with flying.”

Finally, gas running low, it was time to head back to the nest.

“This day is really improving,” said Lisa with a big smile on her face as I rolled Warbler’s wings level and entered the downwind for Runway 8.

On base it seemed like I needed a lot more back pressure on the elevator than normal, and we also ended up landing long. But the touchdown was smooth, the moment between flying and rolling almost undetectable.

Then the noise started.

Or maybe it was there all along and we just couldn’t hear it over the roar of the engine. It was a flapping-type sound. I cocked my head to one side. “Do you hear that?” I asked Lisa. Then I pulled one ear cup away from my head, trying to hear it better, trying to process what it might be. As Warbler rolled down the runway, it seemed to get louder.

We needed fuel, so I headed for the far end of Eight, where Taxiway Charlie leads to the terminal and the pumps.

I should have turned tail and headed back to the hangars. Hindsight.

As we crossed One Niner, the noise was really distinctive. It sounded like a loose cowl banging in the slip stream. I decided to shut down right where we were. Nearly a mile from either the hangars or the ramp.

It never occurred to me that the engine would never restart again.

I pulled back the throttle and the mixture, then turned off the mags. With an abrupt shudder the prop snapped to attention, stopping at 12 o’clock, not making the lazy spin down we are used to. With trepidation, I slid the top of the three-piece canopy to the right, climbed out onto the wing, dropped to the ground, and came around to the front of the plane.

Everything looked normal. No loose cowl pieces.

For some reason, I reached up to pull Warbler’s prop down to the normal position.

It was stuck fast. Excalibur in the stone. My mind couldn’t process what my hands and eyes were telling me. One moment the engine is running; the next moment, after shutting it down myself, the prop is stuck fast.

I didn’t know what to do, but attempting a restart was out. I looked far to the West at the distant Lego block of the hangar. Then I looked far to the South at the distant Lego block of the terminal. This was a stupid place to shut down.

So like hippie college students who ran out of gas on the way back to the dorm, we pushed Warbler back down the taxiway, across One Nine, and back along half the length of Eight. Well, Lisa pushed. I pulled on the stuck prop, using it as a combination tow bar and steering tiller.

It was a long haul, helped by a friendly couple from Arizona headed home from AirVenture, who added some horsepower to the pushing on the last half of the journey.

The slow roll to the hangar seemed to take longer than the flight that proceeded it, but eventually we got Warbler back in his nest, where Lisa collapsed into a little puddle of DNA in the corner. Not to say she reverted to sucking her thumb, or anything—which I probably would have—but there are some things in this world you just can’t do for yourself, and a good example is calling your mechanic to discuss a very expensive-sounding repair on an airplane you really couldn’t afford in the first, so I offered to make the call. That’s what friends are for.

I got the man on the phone and described what had happened. The prop would turn backwards as much as I wanted it to, but going in the normal direction of travel, when the blade reached 12 o’clock it stopped cold.

The mechanic said he’d never heard of anything like that before.

He had me check the oil. It was fine. Then one or two other things. Finally he said, let it cool down, then see if the prop frees up.

As we had time to kill, I starting calling various experts we knew in the Ercoupe community. The first guy thought it sounded like a broken crankshaft, about the worst thing that could happen. But I didn’t think so. Sure, if the prop were totally frozen, or totally loose. But half and half? Of course, all I know about airplane breakdowns is things that have broken down on mine. I was in uncharted territory here.

The next three guys I called had never heard of such a thing, either. Great. But all three of them instinctively felt we were seeing a bizarre manifestation of a stuck valve, a serious but not fatal mechanical issue.

Hours later, the engine cool, the prop spun freely again.

The next step? Lisa’s mechanic will have to make a house call. That will happen next weekend. And in the meantime, even with two Ercoupes, we have no plane to fly.

One spare, apparently, is not enough.

 

Death by a thousand pinpricks

It must be a misprint. Or maybe I’m reading it wrong. I take my glasses off, rub my eyes, put my glasses back on, and look at the PDF on the tiny screen of my iPhone again. Using my fingers, I zoom in on the bottom line of the invoice from my mechanic.

Yes.

There really are two numbers to the left of the comma. The six week-long annual inspection has resulted in a mind numbing, stomach churningly large bill. More the type of number that you’d expect for an engine rebuild, than for a simple annual. And about five times more than I had expected.

How the @#&% did it cost that much?

I scan through the two itemized pages. It’s a mix of self-inflicted injuries (things I decided to do that didn’t strictly needed to be done), things that had to be done (and could no longer be put off), and new discoveries (that had to be fixed to remain airworthy).

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None of them, really, were wildly expensive in and of themselves. No. Wait. That’s not true. Everything about airplane maintenance could correctly be called “wildly expensive.” So it would be more accurate to say that none of these things, by themselves, were more expensive than I’d expect them to be. It’s just that there were a boatload of them.

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The (expected) biggie was the rebuilding of the pilot side fuel tank. I more or less knew what that would cost, having done the tank on the other side last year. What I’d forgotten about, however, was the cost of removing it, sending it out, getting it sent back, painting it, and re-installing it. But at least now, with both wing tanks rebuilt and the header tank replaced, my fuel system problems are a thing of the past, and unlikely to need to be addressed ever again, at least in my lifetime.

The (unexpected) biggie was the discovery of a worn down area on the engine mount that was so thin that a fabric-testing probe could be poked through it. Also unexpected was an increase in both the base cost of the annual itself and in the shop rate charged by my wrench turners.

In the self-inflicted, but more expensive that I thought it would be department, was the removal of the new digital engine monitor and its replacement with conventional gauges. I’ve had nothing but trouble with the stupid thing in the limited flying I’ve done between maintenance headaches since we put it in, and finally the manufacturer graciously offered to refund my money, an offer I jumped on. I figured the refund would more than cover the cost of the conventional instruments to replace it, and it did. But I hadn’t understood that the instruments didn’t include the needed leads and probes to make them work, gadgets which ended up doubling the cost of each dial. Nor had I understood just how damn long it would take my crew to remove the digital system, apparently a full seven hours at 95 smackeroos per hour; or how long it would take to hook up the replacements, apparently eight full hours at 95 smackeroos per hour. (I’d never known why dollars are sometimes called smackeroos until right now: Sometimes money can just smack you across the face!)

Another self-inflicted injury was my attitude towards my attitude indictor. A few years back we put in a digital one, but it reflects all manner of light in our greenhouse of an airplane, and can’t be read more than half the time. As I was pulling out the digital engine monitor anyway, which in addition to a host of other problems, also suffered from the glare issue, I decided to get all the computerized glass panel crap out of the plane and go back to the humble “steam gauges” that I’ve known and loved for years. (Don’t worry, it wasn’t a total hissy fit, and I haven’tcompletely lost my mind, I’m still navigating by GPS on my iPad…) I was delighted that I was able to sell the glass attitude indicator for a good price, but still, its traditional replacement wasn’t cheap, and again, there were fees for pulling the old one out and putting the new one in the same hole.

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But, really, most of the bill was little things. Four spark plug gaskets for $4.50, re-timing of the right mag at $23.75…

$47.50 to patch yet another crack in the nose bowl…

$15.00 for an air filter…

And on it went…

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It was death by a thousand pinpricks. But except for the actual writing of the check, at least it’s all over now.

Well, until next year.

 

A tale of two cowls… well, three, actually

Houston, we have a cowl problem. As, it seems, do all Ercoupes. Our problem started with a nose cowl crack. We’d just bought Tess, and the crack was brought to my attention during the first of her many, many rounds of maintenance.

My options were to buy a used replacement nose cowl from the Ercoupe junkyard guy for $500 bucks (which would probably crack, too), buy a new cowl from Univair for $1,200 bucks (which would probably crack, also), or have my guys “patch” it.

Silly me, I opted for the patch, and when Tess came home from her mechanics, her beautiful, flat nose was covered in brass rivets. It looked like Machine Gun Kelly strafed us on the runway.

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This was just days before our first Ercoupe convention, and I was mad as hell. It was not the first impression I wanted to make. I spent the afternoon sitting on an upside-down bucket with a Q-tip and a can of metallic touchup paint, painstakingly covering each and every one of the 43 brass-colored rivets with dark blue paint. It was slow going. Metallic paint doesn’t like to stay stirred. Or to stick to brass. In the end, while my handiwork wouldn’t pass close inspection, or win a Lindy at Oshkosh, from any respectable distance it didn’t look too terribly bad.

But since then, every year it seems, a new crack develops, and more rivets get shot into the nose bowl. Rather than Machine Gun Kelley, on close inspection, it now looks like an inebriated Elmer Fudd blasted Tessie’s nose with his double-barreled shotgun.

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Truth be told, there’s actually no original metal left at all. I’m flying behind a solid mass of rivets.

Now, not to whine about money (again), but I think I might have mentioned that while Ercoupes are very affordable to buy—less than most cars—the problem with airplanes is that, sorta like kids, the real costs start when you bring them home from the hospital. All these patches weren’t cheap. I could have easily bought two new nose cowls for what I’ve paid in patches over the years.

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In fact, that’s what my mechanic mentioned sorta off hand as he handed me the latest invoice. Naturally, the next day, a new crack developed.

Normally, at this point the decision would have been obvious, but there are extenuating circumstances. The first is that there’s an airplane paint job on my horizon. And I was sorta thinking about replacing the entire cowl, not just the nose bowl, before the painting, as it’s all in pretty bad shape. But that aside, even if I just wanted to get a new nose bowl, it doesn’t make much sense to pay to have it painted when the whole plane is going to be painted in a few years, nor would it make sense to leave unprotected metal out in the elements just because a paint job is on the horizon.

But that’s not all. Now there are three options for new cowls. Univair still has the original thin aluminum nose bowl, but Alpha, who bought up a lot of mods from Skyport when they shut down, nearly have FAA approval for two more options. One is the original-style nose bowl, but made of a reportedly more crack-resistant fiberglass. It also promises to be cheaper. And additionally, they are bringing back a product called the Kinney Speed Bowl. It’s also a fiberglass bowl, but with a much larger air intakes for improved cooling.

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I was drawn to the Kinney for two reasons: We live in a hot desert; and the word “speed” was in the title.

That said, Rio thinks the Kinney bowls are the ugliest things in the world and, “The worst thing a man could do to an Ercoupe.” To be honest, I couldn’t quite picture how our girl would look with one on it, so I started Googling pictures of Ercoupe nose bowls.

And that’s when I discovered this:

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Image courtesy Machine Age Lamps

Which is about the coolest thing I’ve ever seen. Yeah. That’s a real-life Ercoupe nose cowl turned into a steampunk lamp. What’s the story behind it?

The lamp is the creation of Darin Carling. His brother Shawn runs an outfit called Machine Age Lamps in Lakeville, Minnesota. The brothers grew up on a small farm in rural North Dakota, so they were good at fixing stuff, creating stuff, or re-purposing stuff. Farm folk like that wouldn’t go out and buy a new cowl.

I don’t know if I ever mentioned it, but I wasn’t raised on a farm.

Anyway, after leaving the farm, Shawn, in his own words, spent the next 25 years “miscast” in corporate America, until one year at Christmas when he built his father a “unique” lamp out of old tractor parts. His dad dug it, as did everyone else who saw it, and one thing led to another.

“Another,” in this case, being the fact that his work is lighting Gordon Ramsey’s Restaurant. The one in Hong Kong.

Shawn’s highly successful company creates one-of-a-kind lamps from salvaged antique industrial, agricultural, nautical, and aircraft parts and gauges. The ‘Coupe cowl light was created by brother Darin, who was encouraged by Shawn to build some items for the businesses.

Darin told me he didn’t want to copy anybody else’s work, including his brother’s, and that it took him a long time to “come up with solid ideas of my own.” But wow, did he ever. Darin says, “We are interested in history and in all things mechanical, and old airplanes are as good as it gets.”

The ‘Coupe lamp actually started with a Cessna nose cowl. Darin says, “A few years ago I purchased a Cessna nose cowling from someone with no idea what I was going to do with it. It sat in my living room for 6 months before I started working on it. The first ones did not have lights as props but rather lights coming out the front and hanging down in almost an exhaust pipe fashion. They were kind of cool, but not quite what I wanted. One day I was looking for new light bulbs online and found these very large bulbs. I thought ‘just maybe they could be propellers!’ I made a prototype and it was on display at the Minnesota State Fair and everyone loved it. After that, we started to fine tune and dress them up with vintage emblems, real aviation gears, and valve covers.”

Darin, an aviation lover since childhood, has a deep desire not only to create art, but also to be true to history. “I also do my best to have all the parts make sense,” said Darin, “for example I only put Franklin valve covers in my Stinson cowls. History is very important to me, and to the people that buy our projects.” The Ercoupe lamp has vintage Continental valve covers and assorted engine gears for a cool look.

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Darin says he always keep track of where the cowls come from and, “If I can get history, I pass that along. One cowl I’m working on now has a photo copy of the bill of sale for the plane back in 1953.” That being said, I can happily report that no Ercoupes were harmed in the making of the ‘Coupe Cowl lamp. Darin bought the cowl from the friend of an Ercoupe owner in Michigan. Apparently, like me, the airplane owner was having a cowl problem. Unlike me, he had the sense to buy a new one.

Is Darin a pilot? Not yet, although his father worked for the FAA and brother Shawn has his ticket. Darin tells me he’s finished his ground school.

But back to the lamp. How does it work? Despite the old parts, all the electric components are brand new. The Ercoupe lamp is equipped with UL approved wiring, a dimmer switch, and a heavy-duty grounded lamp cord, although Darin says some airplane cowl customers have chosen to have electricians hardwire the lamp for “a clean cordless look,” controlling the lamp through a wall switch.

In the case of the cowl lamps, Darin builds a steel frame inside to support the soft metal cowls, which are either buffed or powder coated. The frame has mounting holes drilled on 16-inch centers to match up with the standard wall studs, allowing it to be hung “just like a picture.” Darin also covers the back of the cowl with sheet metal, painting the inside of it black. “When peeking in the cowl, I wanted the illusion of looking in a real plane,” said Darin, “and you would not get that if the painted wall showed through.”

So how do those crazy bulbs hold up? Darin says he’s yet to see one burn out, and some of the lamps in his house have been blazing away for three years. That said, “I always ship my cowls with three bulbs, just in case.” Will we see more Ercoupe art from Darin? “I would love to do more Ercoupe art,” Darin tells me, “I researched the Ercoupe and found it’s history to be very cool.”

Meanwhile, did I ever find a picture that helped me decide what Tess would look like with an entirely different kind of cowl? No. So for now we’ll probably just keep patching the patches. But I do know one thing: Once we decide what to do, I’ll turn our old one over to Darin and commission him to turn it into some sort of lamp for our hangar.

Maybe I’ll have him drill out the hundreds of rivets and have him put a little Christmas light in each hole. Or maybe not.

It would be blinding.

 

[Editor's Note: Darin tells Plane Tales that between our interview with him and going to press on this story the Ercoupe Nose Bowl Lamp sold to a private collector. But while you missed out on this lamp we're told that Machine Age Lamps has scored three more non-flight worthy Ercoupe nose bowls from the Ercoupe Junkyard guy, so more 'Coupe lights are coming!]

 

Officially not good

If you’ve ever been out to a small airport, you might have noticed that there are always a lot of pilots hanging around talking to each other about flying, and you might wonder why they aren’t just out flying instead.

It’s probably because their planes are in the shop, where it seems ours spends half her time recently.

To recap: In July of last year we put in a new engine. Well, three new engines. That took until late November to straighten out.

Then we spent all of December pitching, un-pitching, and re-pitching the prop so it would work with Engine III.

January Tess developed oil incontinence; and in February the header tank sprung a leak. Into the cockpit.

March it was throttle issues. Now in April, one month before our annual (Again? Seriously?) this happened:

Yeah, the exhaust pipe isn’t supposed to move like that. Actually, it’s really not supposed to move at all. In this case our muffler has come loose, and as it flaps around, it’s torn the carb heat connections loose, too. What does all that mean?

It means at least a theoretical risk of carbon monoxide poisoning for anyone in the plane when the engine is running, and a more than theoretical risk that the carb heat system will fail when it’s needed most. And those two things together add up to mandatory maintenance.

And as I could see that the cowl would have to come off to work on this newest problem, it made more sense to me to move the dreaded annual up a few weeks than to pay for two rounds of maintenance within a month’s time.

So off to the shop I must go, and then, because I won’t be flying for a while, I guess I’ll just hang out and talk with the other pilots.

The one’s whose planes are being worked on, too.

 

 

The third time is the charm… Or maybe the fourth…

Yay! The plane is done. The day is beautiful, and this afternoon Rio and I launch on a four-day adventure. We’re flying the Route 66 Air Tour, joining a fleet of 20-30 airplanes following the historic “mother road” across New Mexico and into Arizona. We’ve just been through a major maintenance event, but I’m confident the one-hour solo flight home will serve as an adequate test flight to ensure that all is in order.

Debs, Grandma Jean, and Rio are at home assembling chicken salad sandwiches for a pre-Tour party at our airport (more about that next week) so Lisa is driving me the hour and a quarter over to Santa Fe to pick up the plane. It’s my second trip over in as many days. She’ll drop me off and head to SXU by car, where we’ll rendezvous in the late morning. My job is to prepare Tess for her adventure and to get the giant silver quasi-antique 40-cup coffee pot brewing. Once Lisa shows up, and I’ll easily beat her to Santa Rosa, we are to lay out the cookies that the city council authorized the airport manager to buy onto trays in an attractive and creative manner.

After the required small talk with my mechanics, the giant hangar doors rumble open and my chief mechanic uses his fancy-pants multi-adjustable tow bar to grab Tess’s nose gear and pull her out into the sun. It’s a perfect flying morning. Not a breath of wind. I do a quick walk around, and assured that all is as it should be, I mount the wing, step down into the cockpit and settle in for the flight.

My only real worry is the flow of fuel between Tessie’s three tanks. I plan to watch the fuel gauge on the new header tank like a hawk to ensure its being kept full by the engine-driven fuel pump as designed, and that the excess fuel is properly overflowing and draining back into the conjoined wing tanks; an invisible process that can only be monitored by proxy, using the compass-style float gauge on the floor of the plane.

If all goes well, I’ll be back to my homebase in a little over an hour. If all goes poorly I’ve got plenty of time, and fuel, to get back to Santa Fe.

I reach above me and button up the canopy, then secure my lap belt, attach the shoulder belt, cinching it down tight, but not too tight. I set a pen and a piece of paper on the seat next to me to copy down my taxi clearance, then plug in my headset. As it’s been a few weeks since I last flew Tess, I pull the engine start checklist from the right-hand side pocket and follow it.

Parking brake engaged. Check.

Fuel cutoff open. Check.

Master switch on. Check.

Beacon on. Check.

Crack the throttle a quarter inch. Check.

Push the mixture control full forward. Check.

Ensure the carb heat knob is full forward. Check.

Turn the ignition switch to both. Check.

Clear the “add fuel” warning message from the engine monitor. Check.

Give her two shots of prime. Check!

“Clear prop!” I shout, and press the starter button.

The propeller starts spinning and the engine coughs to life, its roar filling the cockpit as the spinning prop dissolves into a pale grey blur of motion. At once the new-old tachometer goes crazy, the needle jumping up and down like a seismograph station when the big one hits the San Andres.

Well, that’s not right. I fiddle with the throttle, advancing it, and retarding it to no avail.

Well, crud.

I shut the engine down. Close the fuel valve, and one by one shut off the heavy satin metal “bat switches” (so called because they look like miniature baseball bats) that run all the plane’s electronic systems. Each has a satisfactory solid movement as it’s flipped downwards to its off position. Radio: Thunk. 12-volt power: Thunk. Navigation lights: Thunk… I unlatch my seatbelt, slide my shoulder out from under the shoulder belt and unbutton the canopy, sliding it downwards into the belly of the plane. I hoist myself up on the seat back, step out on the wing, then drop to the ground behind the wing.

I walk back toward the maintenance hangar. My mechanics heard the engine start, then stop again, and are waiting for me. “Hi, guys, long time no see,” I joke. Then show them the quick loop of video I shot on my iPhone of the new-old tach.

“It worked fine when we tested it,” they say.

The new-old tach is the one that was originally in the plane, but was removed when we (foolishly) purchased a modern digital engine monitor, which has been nothing but a pain in the ass as far as I’m concerned. I decided to get it to help us better protect our expensive new engine, but it added to the delays that cost us the last race season, plus I find it hard to read in flight, I miss all of my simple old gauges that told me in a half-glance the status of my engine, but most of all I miss the tach.

The engine monitor has a tach, but it’s small and hyper sensitive. It jumps around a lot even when the throttle is rock solid, and I’ve found it impossible to use to get the right power settings for landing. I tried for some time, and finally decided to just re-install the analog tach to make landing operations safer and easier.

But now, in its maiden re-installation, it has gone crazy. Tony, the number two mechanic, heads out to the plane with a flashlight and a handful of tools. He climbs up on the wing and drops into the cockpit backwards, his feet dangling outside, so that he can see under the dash.

I text Lisa: Short delay on this end. Keep driving.

After a few minutes of grumbling, he emerges and reports the problem likely fixed. “What happened?” I asked.

Tony shrugs, “It’s a pretty simple system. I just disconnected it and reconnected it. Let’s test it.”

I climb back into the plane, pulling the canopy halves partway up to protect myself from the prop blast, then double check that the parking brake is engaged. Fuel cutoff open… master switch on… beacon on… crack the throttle a quarter inch… push the mixture control full forward… ensure the carb heat knob is full forward… turn the ignition switch to both… clear the “add fuel” warning message from the engine monitor… give her half-shot of prime for a warm engine…

“Clear prop!” I shout, and press the starter button. The propeller starts spinning and the engine coughs to life, its roar filling the cockpit as the spinning prop dissolves into a pale grey blur of motion.

The tach behaves itself. Oh well, what’s one little glitch? After all, they had to pretty much disconnect everything in the plane to get the old tank out and the new one in. I give Tony a “thumbs up” and he heads back into the hangar.

I reach above me and button up the canopy, then secure my lap belt, attach the shoulder belt, cinching it down tight, but not too tight. I put on my headset and dial up the Santa Fe ATIS, which stands for Automated Terminal Information Service, a pre-recorded audio loop that gives pilots basic information on airport operations: The wind conditions, the active runway, and more.

I’m greeted with complete silence.

Well, not complete silence, with the engine running there’s always a dull roar in the cockpit, even with the best of headsets. But I’m not receiving any radio signals. I double check. Yeah, I’ve entered the frequency right. I poke at the intercom buttons. I fuss with the volume button on my headset. I pull out the head set plugs, and push them in again.

Well, crud. I shut the engine down. Close the fuel valve, and one by one shut off the heavy satin metal bat switches that run all the plane’s electronic systems. Radio, 12 volt, Navigation lights, Thunk… thunk… thunk… I unlatch my seat belt, slide my shoulder out from under the shoulder belt and unbutton the canopy, sliding it downwards into the belly of the plane. I hoist myself up on the seat back, step out on the wing, then drop to the ground behind the wing.

I walk back toward the maintenance hangar. Again. My mechanics heard the engine start, then stop again, and are waiting for me. “Hi, guys, long time no see,” I joke.

It’s not quite so funny this time.

Once again Tony heads out to the plane with a flashlight and a handful of tools. He climbs up on the wing and drops into the cockpit backwards, his feet dangling outside, so that he can see under the dash.

I text Lisa: Another short delay on this end. Keep driving.

After a few minutes of grumbling, he emerges and reports the problem likely fixed. “What happened?” I asked.

Tony shrugs, “I think the plug was loose. I just disconnected it and reconnected it. Let’s test it.”

I climb back into the plane. No need to start the plane to test this problem. I flip the master switch on, then the radio control switch. I hold the headset up to one ear and hear, “Santa Fe information Papa, time sixteen forty five Zulu…”

I nod to Tony and give him a thumbs up again.

“Now don’t be coming back here again,” Tony teases me.

I reach above me and button up the canopy, then secure my lap belt, attach the shoulder belt, cinching it down tight, but not too tight.

Parking brake engaged, fuel cutoff open, turn the master switch, flip on the beacon, crack the throttle a quarter inch, push the mixture control full forward, ensure the carb heat knob is full forward, turn the ignition switch to both, clear the “add fuel” warning message from the engine monitor, give her a half shot of prime…

“Clear prop!” I shout, and press the starter button.

The propeller starts spinning and the engine coughs to life, its roar filling the cockpit as the spinning prop dissolves into a pale grey blur of motion. Time to get this party started!

I call ground control and get permission to taxi, then I engage my Cloudahoy App to record the flight and start to taxi. I notice the GPS link in the App hasn’t turned green yet. I also notice that on my Garmin Pilot Navigation system I’m not moving. I slow down and look at my transponder.

It says “MSG.”

That can’t be good. I call ground control and ask for permission to return to the ramp.

I pull back up in front of my mechanic’s hangar and I shut the engine down. I close the fuel valve, and one by one shut off the bat switches. Thunk… thunk… thunk… Unlatch seat belt, slide shoulder out and unbutton canopy. I hoist myself up on the seat back, step out on the wing, then drop to the ground behind the wing.

I walk back towards the maintenance hangar, and pull the heavy door open enough to slip in.

“Seriously?” they ask me.

I text Lisa: Third time, assuredly, will be the charm. Keep driving.

This one is more complicated. The coaxial cable has pulled out of its plug. My guys don’t have the magic tool needed to fix it. I text home to tell Rio to search the flight lounge cabinets for our old dash-top GPS unit. I’m not going to let a little thing like no navigation system spoil our adventure. In the meantime, my guys call the avionics shop on the other side of the field, who agree to send someone right over.

I pass the time in my mechanic’s office, in out of the cold late morning air, surfing eBay on my iPad. After what seems like forever, once again, Tess is pronounced ready for flight.

Parking brake, fuel cutoff, master, beacon, throttle, mixture, carb heat, ignition, fuel warning, give her half shot of prime…

“Clear prop!” I shout, and press the starter button.

The propeller starts spinning and the engine coughs to life, its roar filling the cockpit as the spinning prop dissolves into a pale grey blur of motion. Third time is the charm!

I call ground control and get permission to taxi. Everything is working fine. The new-old tach is behaving, I can hear and talk on the radio, and my nav system is alive. I taxi back toward the runway again, scanning the instrument panel for anything out of the ordinary.

Everything looks good. I do my run up and tell the tower I’m ready to rock and roll. They advise me a larger plane is on long final, but the tower controller clears me for takeoff, adding, “Do not hesitate, early turnout approved.” Hell yeah, I’ve just been given permission to have some fun.

I throttle up to full power as I turn onto the runway, foot never touching the brake. Tess surges forward, she has fuel to get home and nothing else onboard. As she leaps into the air I bank left, and barely higher than the tower, fly up over the south ramp, studying the planes parked in neat rows.

It’s good to be back in the air, even if it’s a few hours later than I expected. It’s surprisingly calm air, the engine sounds strong and smooth, and all the repairs seem to be holding. I reach up to the engine monitor and scroll to the secondary screen. Amps and volts good. I scroll to the fuel computer. It shows me that I have fuel enough to reach Hawaii.

Non-stop.

That seems improbable.

I check the fuel flow. The gauge is reporting one gallon per hour, not our usual five and a half. I know this is wrong. But what could be causing it? I lift one earphone clear of my head. A blast of sound assaults me. Nothing wrong with the engine. If I were venting fuel above the sensor, the engine would be starved. I look at the fuel gauge on the floor. It’s steady. The float gauge in the new header tank is riding high. Like most of the rest of the repairs today, it must be a wire not hooked up right.

Do I go on or go back? A deep sigh. I’m only ten miles out; I’m going to have to take the plane back to the mechanics at some point anyway. It might as well be now. I bank into a right-hand 180 and dial my radio back to the Santa Fe tower to tell them I’m coming back.

I land, taxi back to my mechanics and park right in front of their hangar doors. Engine shut down. Fuel valve. Bat switches. Seat belt. Shoulder belt. Canopy. Up and out.

I walk back towards the maintenance hangar, and pull the heavy door open enough to slip in. They guys aren’t happy to see me.

“Each time you come back it takes longer to fix,” sighs Tony. I tell him the problem and he gathers his tools and his flashlight.

I text Lisa: Wouldn’t you know it? More trouble. Keep driving.

She replies: I can’t. I’m already here.

Not quite home yet

Tess finally made bail. Her mechanics called to say they’d finished the latest round of repairs: The new header tank was in; the leaking oil sump quick drain had been replaced; and the fuel pump gasket was squared away. Come pick her up.

Reviewing the invoice, I saw that changing the fuel tank gobbled up thirty-two man hours. They had to disconnect the sundry fuel lines, unhook all the controls and cables in the cockpit, remove most of the radios and other modern gear, unbolt the tank from its brackets, drop it to the floor, then maneuver it up over the seat and out through the top of the canopy. Then they had to do the opposite with the new tank, then bolt it in place, reinstall the radios and other modern gear, hook up all the cockpit cables and controls, and connect all the sundry fuel lines to the new tank.

This is considered a “plug and play” installation by one Ercoupe expert I talked to about swapping header tanks.

I also noticed the shop rate had gone up ten dollars an hour from the last invoice. My pay has not. I dealt with that by buying a T-shirt that says: “Welcome to aviation. You are now broke.” It seemed like the right thing to do with the last $14.99 in my retirement fund.

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But at least the latest round was behind me. And there’s really not much left on the plane that hasn’t been either refurbished or replaced. Tess isn’t a 1947 Ercoupe any more. She’s a 2013-2014-2015-2016-2017-2018 model. All she really needs now is a new paint job. But that’s a tale for another day.

I handed my mechanic another check that had a number which included a comma, and sat down on his leather couch to check the weather. Ut-oh. It was getting windy back home. In Santa Fe it was as nice as it could be. In Santa Rosa the wind was 18 miles per hour. Gusting to 30.

I don’t like gusting, especially when the gusts are nearly double the base wind speed. It makes for unnecessarily exciting landings.

The winds were forecast to remain high until sunset. Aw, hell.

I had a decision to make. Ercoupes are great crosswind planes. Because their landing gear lets them land practically sideways, they can handle wind better than pretty much any plane out there. And I’ve landed in some pretty hairy wind. But there’s a difference between landing in hairy wind when you have to, and choosing to go and put yourself out in a hairy situation. I was confident I could do it, but was it worth it? Just to get the plane back home again?

I grumbled to myself for a while, and finally, my chief mechanic, who had been sitting politely at his desk said, “I’m going to go back to work while you make up your mind,” and then disappeared out his office door into his hangar where two Civil Air Patrol planes were getting annuals and a local flight school 172 was getting its bent firewall replaced following a nose-heavy landing by a student pilot.

I looked to the next day’s weather. It, too, was windy as the dickens. But the day after was forecast to be lovely. Doubting myself, as always when it comes to this kind of thing, I choose to wait. I wandered out into the hangar, then outside where Tess was tied down. I put her gustlock in place, grabbed the keys, buttoned up the canopy, patted her on the spinner and went back to the car.

At Starbucks thirty minutes later I found myself checking the wind again, just to reassure myself it was still windy and that I’d made a good call.

It was still windy.

I ran a few errands then headed home, to find the wind had gone home to where ever it lives as well. It was a calm evening. If I’d just waited an hour or two the flight, and landing would have been uneventful.

I kicked myself, but I also knew the old adage it’s better to be on the ground wishing you were in the air than to be in the air wishing you were on the ground. The weather the day after tomorrow is still forecast to be lovely. And Tess is happy to wait.

 

Oil leak detectives

Just when I thought all of our maintenance woes were behind us, I opened the hangar door.

Silly me.

Here’s the Tale: Rio and I had mapped out a good training flight. Don’t ask me the details now, I’ve already forgotten them, but I certainly remember the rest of the day. We grabbed a light breakfast, loaded up Grandma Jean and R2D2 (her oxygen concentrator), and headed out to the airport. Grandma wanted to see Lisa’s recent renovation of our Third World airport terminal and said she’d hang out there and soak in the vibe while Rio and I flew for an hour or so.

It was a lovely morning, not too early and not too late, neither too cool nor too warm, and the wind was just barely stroking the surface of the earth with a lover’s touch.

When we arrived at the hangar we parked in front of the double doors so Grandma could see her airplane. I unlocked the padlock, then I took the right door and Rio the left. We dramatically pulled the great doors open at the same time—like the curtains in an old fashioned theater at the start of the show—revealing Tess, the morning light kissing her canopy. Above her the flags in the hangar undulated gently in the morning breeze, and with her sharp wing dihedral she looked ready to jump into the air… Except for the fact that she was sitting in a puddle of her own oil.

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Damn. What’s this going to cost me?

Actually, as we know we have a soon-to-be replaced leaky gas tank, at first I mistook the dark pool for fuel. But kneeling down and running a finger through it, I found it to be slick, honey-colored oil. What the….? The pool was centered under and around the front nose gear. Where did it come from?

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Now oil leaks from Continental engines aren’t rare. Some folks joke that like a Harley, if it ain’t leaking oil, it’s surely out of oil. But this was something new. The sides of the cowl were clean, as was the front wheel pant, plane’s belly, and the hangar floor underneath the breather tube. Adding to the mystery, after our last flight the week before, Lisa and I had stayed in the hangar a good two hours, cleaning up the plane, listening to the CTAF, smoking cigars, and soaking in the whole airport vibe; and in those two hours no oil had leaked. So how did this much oil escape an engine that’s not running? And how’d it get from the engine, where it belongs, to the floor, where it does not belong?

Of course, oil is a funny thing. A little spilled oil looks like a lot. To my many-times-bitten now crazy-shy eye, it was the entire contents of the oil sump. In reality it wasn’t even enough to detect missing on the dipstick. Still, not understanding what was going on, I cancelled our planned flight. Rio thought I was being a bit of a wuss, but he didn’t argue the point, and thus began the Great Oil Leak Investigation—a tale not likely to knock Sir Arthur Conan Doyle out of first place anytime soon.

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We opened both sides of the cowl and looked for oil. Naturally, as we rarely clean the inside of the cowl, there was oil everywhere. Shining my handsome new Tessie-blue 100-lumen Eddie Bauer aluminum flashlight around inside the engine compartment I felt like an explorer of yore trying to trace the source of the Nile.

Let’s see here… These two little streams of oil seem to connect to that stain here, which seems to come from up there, so the oil must be leaking from the… alternator? No, that can’t be right! I took a ton of photos with my iPhone and emailed them to my beleaguered mechanic (who responded two days later that it didn’t look like that much oil to him, and if it was him, he wouldn’t worry about it). Then, using many pale blue paper shop towels I cleaned the inside of the engine compartment better than anyone had in the last 71 years.

I placed clean folded towels in various strategic locations and we left for the day, Rio predicting that we’d come back to a clean airplane and clean towels.

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He was half right. A couple of days later we came back to clean towels, and more oil on the floor. It was as if the oil were welling up from the concrete below the plane. I had a brief vision of the start of the Beverly Hillbillies, with me in the role of Jed Clampett, but I knew I hadn’t struck oil. Tess was leaking it from somewhere.

But where?

One of the leading contenders from the previous week had been the gasket between the fuel pump and the engine case. There was a clear sign of a leak there, but how that gasket could leak in the absence of engine pressure was a mystery to me, and now the towel below it was clean. The other contender was the valve cover on the number one cylinder, which was also leaking a drip or two, but it could hardly have been the culprit with a resting engine, and again the towel there was clean. And yet, there was fresh oil on the ground.

Adding to the mystery was the fact that oil spilling pretty much anywhere from inside the engine should come out of the bottom of the cowl where the front fork comes through the metal surrounding the engine, but oil exiting the compartment there would stain the front wheel pant, and it was clean. Complicating matters was the fact the oil had just been changed and it was still clean, making it almost transparent.

Lying on the concrete, trying to avoid getting oil on my shirt, I carefully studied the front fork. It had a smooth sheen of oil on it, as did the aft scissors assembly. Mentally, working slowly backwards, I tried to envision the path of the oil, and it led me to the oil sump drain. Suddenly the clouds parted, the sun came out, and it all made sense.

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When the engine is off the oil drains out of the case and down into the sump. The only logical place for oil to leak from when the engine is powered down is from the sump. I reached in and fussed with the quick release valve used to drain the oil out when changing oil. Of course I had no idea how it worked normally, which made it challenging to see if it wasn’t working right. Twisting, tugging, pulling, I managed to accidently open it. A gush of gold oil flowed out. Mesmerized, I watched its travels.

Eureka!

As the little stream twisted and turned around various obstacles in its path all the mysteries fell by the wayside. I’d found the source of the Nile.

Now the challenge was to figure out how on earth oil was leaking from the drain. There were three possibilities. The mechanism itself could be failing, it wasn’t closed right, or it might not be screwed on exactly tight enough. To rule out the last possibility, following instructions from one of our two mechanics, I took a paper towel and wrapped the upper part of the drain like a mummy, using a zip tie to secure the towel.

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Then I flew. And left the towel in place for a week.

When I returned, there was new oil on the floor and the towel was clean. Well, not clean, but not oil soaked. A new sump drain was ordered and my guys will put it in this week while Tess is visiting them for a new header tank. Once that’s done, I’m confident that all our maintenance woes will be behind us.

Until I open the hangar door again.

 

 

The death of the Little Dutch Boy

Remember last week when I told you that, as always with airplanes, there was a problem? Well, at risk of turning Plane Tales into the aviation version of Bob Vila’s This Old House TV series, today I have yet another Plane Problem tale.

It all started when we bought the airplane. No really, today’s feature attraction is one I’ve known about, and have been putting off, since 2013.

But before we can dig into the latest money-eater, for background you need to know that Tessie has three fuel tanks. There’s one in each wing, which is where airplane gas tanks are normally found. Somewhat uniquely, Tess’s are interconnected with no fuel selector, making the pair act like one large gas tank. Even more uniquely, there’s a fuselage tank in the nose of the plane between the engine and the instrument panel. This makes some people nervous, with all that gas in their laps, but in truth, all airplanes are just flying gasoline bombs anyway, so it’s never bothered me. In fact, I regard my fuselage tank as a great safety feature due to the way the entire fuel system is designed.

Here’s the deal: An engine-driven fuel pump draws gas up from the conjoined wing tanks and into the nose tank, which I generally call a “header” tank. Gas is then gravity-fed down to the carburetor. The fuel pump draws more gas than the engine uses, and the header tank has an overflow tube that leads back down to the wing tanks again.

Think of it like one of those chocolate fountains you see at weddings.

What makes this arrangement safe, or safer than virtually any other low wing airplane, is the fact that the engine doesn’t need the fuel pump to run. If the fuel pump conks out, the header tank can keep the engine running for an hour. In other low wing planes, if the fuel pump kicks the bucket, the engine shuts down (which is why many planes have backup fuel pumps, but I’m a great believer in catastrophic chains of failure).

So speaking of gas, pretty much since day one—or maybe it was day two—there’s been a slight odor of gas in Tess’s cockpit. My mechanics checked all the usual suspects, looking at the priming system, checking the fuel cutoffs, and making sure all the various connectors were well connected.

All was well.

Looking closer, in every nook and cranny, they finally discovered the cause: An itsy bitsy fuel seep. The header tank was oozing fuel. As pulling out the header tank pretty much entails gutting the interior of the airplane to remove it (or so we all thought at the time), which would take a ton of time, and therefore cost me a ton of money, my mechanics had little trouble convincing me to put this off. Sure, when you first opened the canopy when the plane had been sitting for a while, there’d be a whiff of fuel, but it quickly dissipated and wasn’t an issue.

Until recently.

Once we got Tess back from her months-looooong engine misadventures, I noticed that the fuel smell was worse. Much worse. When opening the canopy, a nauseating wave of fuel fumes poured forth. On our return flight from Texas on our engine break-in flight, I got a pounding headache from the fumes. When I took her in for her new engine’s first oil change, at ten flight hours, I insisted that my mechanics investigate.

Nothing new was amiss.

Meanwhile, the smell was now so strong I wondered if gas were dripping out and soaking into the carpet. My guys suggested I cover the floor with white paper between flights to see if the paper was stained when I came back.

It wasn’t.

Still, I knew the fumes had to be coming from that damn tank, somehow. And that, all evidence to the contrary, things were getting worse. I also kicked myself for not insisting that the tank be pulled and rebuilt during the long downtime of the engine rebuild. I vowed to get it taken care of once and for all at our next annual, which due to all the work that’s been done, has now been reset to the month of May.

That was at the end of November. Just the other day I was back again at my maintenance base in Santa Fe for the second oil change on the new engine. That’s when one of my guys said, “Come over here, I want you to see something.”

It’s never a good thing when an airplane mechanic wants you to see something.

Like a condemned man being led to gallows, I followed him around Tess’s nose to the pilot side. The mechanic pulled out a black flashlight and played a bright beam on the firewall. A long blue stain wandered down the slick metal.

Blue… Blue is the color of the only remaining aviation fuel in the U.S., called 100 low lead, or sometimes 100LL. Why is it blue, other than the fact that its cost per gallon gives pilots the Blues? Well, back in the day when aviation was healthier, there were many kinds of airplane gas. There was 80 octane, the 100 octane, and even a 130 octane. Various engines ran better on one or the other, and with that many gasolines available, there was always the risk that some fool line boy would put the wrong juice in your tanks with possibly tragic results. Thus, each kind of gas had its own color so you could tell if you had the right or wrong go-juice in your bird’s tanks. Eighty was red, 130 was green, and the 100 was blue.

The blue stain was telling us that the seep was no longer a seep. It was a… Well, I don’t know what to call something that’s more than a seep but less than a trickle. But it wasn’t a good sign.

Next the mechanic crawled under the dash to look at the bottom of the header tank from inside. This isn’t an easy thing to do in an Ercoupe. He lay on his back on the seat, head under the dash, legs and feet dangling out the window.

“Can some one get me my phone?” his disembodied voice floated out of the cockpit.

Odd time to choose to make a phone call, I thought, but I fetched his phone from his workbench.

It turns out he wanted to take a photo. Massive stretches of blue were staining the underside of the tank. OK, well, massive is an exaggeration. There were two or three stains the size of postage stamps. But they weren’t there a month ago.

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But that wasn’t half of it. Not by far.

Along the base of the tank, where it rests on a bracket on the inside of the firewall, was liquid gasoline. I guess my seep just became a spring. In just a hair over a month. The tank job couldn’t be put off any longer.

I asked my senior mechanic if the outfit that rebuilt our wing tank this spring also rebuilt header tanks. “I don’t know,” he replied, “but given how hard it’s going to be to get to, maybe you should consider a new one.” Then he asked if I happened to know if Univair sold new ones.

Univair, a company in Colorado, should really be called Uni-savior. They hold the Type Certificate for the Ercoupe, and although they’ve never made a single airplane, they continue to make almost every part and piece of the planes. This is why Ercoupe owners, unlike owners of other classic planes of yesteryear, don’t need to own three planes to keep one flying: Virtually every replacement part we could need can be on a UPS truck within 24 hours.

Because while Univair can make anything you need, not everything you need is always in stock. Still, better to wait six weeks than spend a lifetime searching airplane junkyards.

Standing in my mechanic’s hanger next to Tess I could almost hear the gas dripping onto the floor. Which it wasn’t. Other than in my writer’s imagination. I pulled out my phone and checked Univair’s website. There it was, the header tank, all $2,180.87 of it. Seriously? Eighty-seven cents? Why not just round it up to twenty-two hundred bucks?

I ordered it.

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Then I flew my leaky plane south to the prop shop, wondering if I’d ever get away from fixing this plane and back to just, you know, flying it. So… did I choose 47 or 48 at the prop shop? It turns out it can be pitched to 47.5. Who knew?

With that problem solved, I set about working my contacts for advice on how to pull the header tank out of the plane without completely disemboweling the cockpit, as it turns out that neither of my mechanics had ever done it. Luckily, for Tess’s version of her breed, it’s not too bad a procedure after all. The yokes come out. Various cables get disconnected, then the tank is disconnected and pretty much drops straight onto the floor, where it can be pulled out of the plane. At first glance my guys thought that the entire instrument panel and all its toys would need to be removed, but that’s not necessary. So that’s good.

Well, other than the timing, of course.

Over dinner and lots of wine at the end of the very long day, I was filling the family in on the latest debacle. When I finished, I wrapped up with a hopeful thought from one of my mechanics: At this point we’ve replaced or refurbished virtually every system on the airplane. It’s more of a 2018 Ercoupe than a 1947 Ercoupe. With a strong new power plant on the front and all major systems in ship-shape order, there would be nothing but routine maintenance to worry about going forward.

My mother wasn’t buying that. Not for a second. “I’m sure something else will break down next,” she snorted.

Maybe so. But I hope not. I’ve got my fingers crossed that it will be a long time before the next episode of This Old Airplane airs on the Plane Tales Network.

 

A bitch of a pitch

It was the best Ercoupe takeoff since the JATO tests of 1941. That’s when the National Academy of Sciences strapped rocket pods under the wings of an Ercoupe and lit the fuses in a series of successful tests that led to the military use of rockets to help heavy planes get off of short runways—and to the founding of the Jet Propulsion Laboratory.

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But there were no rocket pods on Tessie’s sturdy metal wings, and we were rising off the ground at nearly 1,000 feet per minute. Granted, in other airplanes that’s nothing to write home about. But in my beloved, but heavy and underpowered ‘Coupe, the only time I’d seen a number like that was when a thunderstorm tried to suck me up into its jaws when I foolishly tried to slip under it.

So I was ecstatic about the climb rate. The new stroker engine was really showing its stuff, lifting Tess off the runway like never before.

But, as always with airplanes, there was a problem. And the problem was my propeller. Oh gosh, where to start… Where to start? OK, the angle at which a propeller cuts the air is called its “pitch.” A flatter pitch bites the air in a way that creates better climb, but at the cost of speed. A steeper pitch gives more speed, but less lifting ability. Pitch also has a complicated ménage à trois relationship with torque and rpm that I don’t even pretend to understand, but the upshot of all of this was that while we had JATO-like takeoffs, we were hitting our engine’s redline at about half power. My mechanic advised me that I needed to re-pitch the prop.

What’s involved in that?

Well, fancy airplanes have variable pitch props that let the pilot change the pitch of the propellers in flight using a lever in the cockpit so that they can have both strong climb on takeoff and fast cruise in flight. Less fancy modern planes have what are called ground-adjustable propellers. The pitch can be easily and quickly changed on the ground to best fit the mission at hand.

But I have neither.

I have a metal prop whose pitch can only be changed by having an expert literally bend the metal blades to change the angle, thus “re-pitching” it. Luckily for me there’s just such an expert an hour and a half’s flight away and there’s no limit on how many times my particular model of prop can be re-pitched, other than the limits imposed by my bank account balance. Unluckily for me, this is not an exact science. It’s more of an art. Adding to the complexity of the situation, propeller performance is affected by weight, temperature, altitude, the whims of the Gods of Aviation, and who knows what else.

Of course, in my innocence at the beginning of this particular Plane Tale, I knew none of this. I trustingly flew to the prop shop and talked to the Master Metal Bender, giving him what data we had. Tessie’s prop was measured. She was wearing a 46-pitch prop. Yeah, the numbers meant nothing to me either, don’t worry about it. All you need to know is that would be considered an “extreme” climb prop for an Ercoupe, which is what she needed at our altitude with a largely worn out engine. Given our data, the prop was re-pitched to 51, which is completely at the other end of the spectrum for ‘Coupes. I now had a fast cruise prop.

And boy, was Tess ever fast. Wearing her new pitch, she cut through the air a full 10 miles per hour faster than ever! It was amazing. Race trophies danced in my eyes.

But, as always with airplanes, there was a problem. And the problem this time was the runway. Tessie didn’t want to leave it. We used up thousands of feet of concrete, and then she could barely lift into the air. I had cartoon visions of Tessie furiously flapping her metal wings to get airborne.

This just wouldn’t do.

So back to the prop shop I went. The Master Metal Bender took Tess’s propeller off again and re-re-pitched. Logically, it seemed we needed to be halfway between where we’d been and where we went (although these things aren’t necessarily linear). As half way would be 48.5, and things don’t work that way, I had to choose between 48 and 49. I went with 49, on the fast side of middle of the road. OK, forget what I said a few minutes ago. We really do have to all talk more about these pitch numbers to drive the story forward. Here’s your background…

Historically the Ercoupe wisdom was that:

48 was a climb prop.

50 was a normal prop, and…

52 was a cruise prop.

But ‘Coupes have gotten fat. New electronics and gadgets have made them heaver over the decades, and that affects prop performance. While there’s no official data, for modern weights, many Coupe folks now consider that:

46 is a climb prop.

48 is a normal, prop, and…

50 is a cruise prop.

Adding to the confusion is that no one seems to know what prop best suits the stroker in an Ercoupe. Given the fact that this whole prop thing is more of an art than a science in the first place, I’m sure you can see where this is going.

So how’d the re-re-pitch go? Rio said it best when he told his grandmother that it was, “Less miserable.”

The new pitch, as expected, reduced the speed and increased the climb. But it was a marginal change at best. So we have to re-re-re-pitch. What a bitch.

So picture me standing in the Aviation Maintenance Casino. I’m standing at the propeller roulette wheel, and there are only two numbers left to bet on: 47 and 48. I know 46 is too flat. I know that 49 and 51 are too steep, and that even though we skipped 50, the change between 49 and 51 wasn’t much. This suggests that going from 49 to 48 wouldn’t net much of a change either. Of course, by the same logic, a 47 shouldn’t be much different from a 46, which was where all of our troubles started in the first place.

The Croupier calls out, “Ladies and gentlemen, place your bets…”

 

You are now free to move about the country

Low enough. Far enough. Great food. Good hotel. North Texas Regional was the only logical destination for our break-in flight. Plus, most of the flight path is over open prairie and farmland with abundant places to put down safely if the new engine craps out.

About the only inhospitable terrain on the entire route is a short stretch of rough canyon country south of Amarillo.

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Naturally, that’s where it happened…

Thump! The plane shudders. The prop protests with an odd whine. Probably just an air pocket. Turbulence from a thermal. Nothing more than a pothole in the sky.

A strong smell of engine exhaust fills the cockpit.

Lisa and I exchange somber glances. That tense spot between my shoulders, which had largely faded away, is suddenly back with a vengeance. I study the engine monitor. RPM good, and steady. Oil pressure and temp in range, and steady. The two back cylinders are running hotter than their sisters in the nose of the plane, but all are steady and well below redline.

Then I see it: The exhaust gas temperature on the number two cylinder is… dancing? The blue bar on the CGR-30P engine monitor is jumping up and down. First showing 1,423 degrees, then indicating 1,215 degrees, next 1,372 degrees. The other three blue EGT bars are steady. Number two continues to vacillate. What could cause such a thing? Would a stuck valve cause erratic gas temps? I cock my head to one side, listening for any odd rhythms from the engine. All sounds good.

Below my wing canyons, ragged rocks, juniper trees. I ease the yoke back and start a shallow climb. Our planned refueling stop, at Childress, is still 20 Maalox moments… I mean minutes… away.

It’s the closest airport.

But other than the dancing EGT all appears well. The dull roar of the engine is steady, unchanging. Power and pressures perfect. All other temps in range. Healthy. There’s nothing to indicate a problem. I ask Lisa to email our mechanic: Should we worry? It’s a pointless exercise. It’s Saturday. He won’t read our missive until Monday. By then, either we’ll be back home or we’ll be in a crumbled pile of metal at the bottom of a canyon.

We fly on, the number two EGT the metronome to the silent song my engine is playing. The tense spot between my shoulders grows and spreads.

At last the badlands pass behind our tails, I back off on the throttle and drop back down to 800 feet. It’s my new favorite cruising altitude, 300 feet higher than race flying and the required minimum altitude to overfly any building, vehicle, boat, person, outhouse or henhouse—and higher than most cell phone towers are tall—while still down close enough to the ground to reveal all the interesting things there are to see. It’s also maximizing our odds of properly seating the piston rings on our new cylinders.

Finally, I roll into the pattern at Childress. The name rang a bell when we planned the flight, but I couldn’t conjure up a mental image of the place. We’ve landed at so many airports these last two years that they’re all a jumble in my head. Now that I see it below, the taxiway new black asphalt standing out in stark contrast to the old faded grey runway, I remember it as the place Lisa momentarily lined up on the taxiway coming in for a landing last year on our way home from the Mark Hardin Memorial Air Race. Normally I would tease her by asking if I should land on the one on the left or the one on the right, but I’m still worried about our engine. In fact, we’ve flown in near silence since the EGT started its erratic dance.

We glide down over the cotton fields and gently kiss the runway. As I throttle back the EGT drops to zero. We taxi to the fuel pumps, shut down, and get out the tool kit. The air is chilly, but the engine metal hot as I open up the cowl and peer in. I honestly don’t know what I expect to see. There’s no splattered oil on the cylinder. The exhaust stack is intact. I stare at the new probe that measures the temperature of the exhaust. The band that holds it in place is oddly oval, but then I realize that I don’t know what it’s supposed to look like.

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The probe on the forward cylinder is nearly out of sight, so I decide to pop open the cowl on the copilot side so I can see what the probe looks like on the other side. It also has the oddly-shaped band, but I notice that there’s a spring over the wires that’s in a different spot. I go back to my side of the plane and poke at the sensor.

It falls out.

Ah. Problem solved. A wonky sensor, that’s all. I push it back into place and reset the retaining spring. I have no great expectation that my fix will hold, but at least I know the readings are nothing to worry about.

I check the oil and find the level hasn’t budged, a new experience for me, as our “old” engine was as fond of oil as an alcoholic sailor is of rum. I stretch, rotate my arms to loosen the knot in my back, and look around. Then it occurs to me: I’m 250 miles out from our home base, and our only issue on engine #3 is a loose sensor.

After all these months grounded, after two failed engine rebuilds, we’re back. We’re truly back in the air and free to move about the country.