A Hellish Week

Be careful what you wish for.

I’ll admit it: when I’m on contract to dry cherries, I hope for rain.

Yes, I’m in Washington state. But no, it doesn’t usually rain much here. I’m on the east side of the Cascade Mountains. That’s the dry, desert side.

In past years, rain has been light. I could count the number of days I had to fly on the fingers of one hand. Last year, I think I went to the second hand. We had one brutal day when I flew more than 6 hours last year, flying over one orchard after another until every single one under contract had been dried. But there isn’t usually much rain.

And although I do get paid to sit around and wait for the rain — which sometimes requires me to sit around my base all day watching radar — I also get paid to fly. It’s the combination of the two forms of revenue that make the season worthwhile.

So I hope for rain.

This week, however, I got more than I wanted. A lot more.

Day One

It started on Monday. I was still based in Quincy, so when the call came at 4:15 AM, it seemed to make sense for me to get started on the 50-acre orchard north of town. But radar showed activity in the Wenatchee area where I had other orchards under contract. I decided to call my other pilot, Mike, who was two spots down from me in the RV park. If I got called to Wenatchee, he’d have to do all the drying in Quincy.

Of course, I woke him up. But that’s part of the job. Our daily standby pay guarantees that we’ll be ready to fly from first light to last light. In Washington, in the summer, that’s a 17-hour day.

It was a good thing I called Mike because I’d been flying only 20 minutes when the call came to dry my first orchard in Malaga. Mike was enroute to the Quincy orchard when I left, telling him to start where I’d left off: at the first wind machine on the west end moving east.

I dried 26 acres in two orchards in Malaga and Wenatchee Heights. Then I returned to Quincy to dry 32 acres in two orchards there with a refueling in between. Then back to Malaga, Monitor, and Wenatchee Heights — multiple times — to dry a total of 177 acres in five orchards, one of which I dried four times.

It rained all day long, barely stopping long enough for us to get in and fly before the rain started up again.

I say “us” because I wasn’t the only helicopter flying. There was at least a dozen of us — R44s, JetRangers, Hughes/MD 500s, Hillers, and even a big, fat Huey. We were darting all over the place, making position calls on the informal air-to-air frequency, 123.45.

For the most part, pilots were polite and informative to avoid traffic conflicts, but there were exceptions. When one jackass flew 50 feet over the top of me while I was hovering at treetop level in an orchard in Malaga, I slammed him over the radio to make it clear that such behavior simply wouldn’t be tolerated. I don’t know whether he was being dumb or inconsiderate or simply trying to piss off the only female pilot drying cherries this year. But as anyone who knows me well can tell you, I don’t take bullshit from anyone. If I’d met him later in the day at the FBO, I probably would have attempted to break his nose — I was that pissed off.

I finished up long after sunset, when there was barely enough light to get back to my Quincy base. I’d spent 8.5 hours in the air, including all repositioning time. I’d dried a total of 245 acres of cherry trees.

What a day!

Back at my base, Mike’s wife had dinner on the table for me. Mike had spent a lot of the day flying, too, but not nearly as much as me. He’d already eaten but kept me company — and joined me to eat some of the ribs leftover from the day before — while I ate. I was exhausted when I went to bed.

But the forecast hinted that there would be more the next day.

Day 2

Although I really expected to be called out very early in the morning, I didn’t do my first dry until after 7 AM. The calls came in one after the other, evenly spaced apart. 7 acres in Malaga, 19 acres on Wenatchee Heights, 35 acres up Squilchuck Canyon, 35 acres in Monitor, 23 acres in Malaga, 7 acres in Malaga (again), and 35 acres in Monitor (again). Along the way, I refueled twice at Wenatchee Airport. I even had enough time to order, take delivery of, and eat a pizza.

In the meantime, a friend of mine in Quincy called to say that there was a bee swarm in a tree in her yard. She knew I wanted to catch it — that’s why she called me. But I was stuck in the Wenatchee area until there was no chance of rain there. I told her I’d come as soon as I could.

Storms over Wenatchee
For a while, I just sat up at my future home and watched the storms move through Wenatchee.

I got called out to do that 35 acres in Monitor again after lunch. When that was done, it wasn’t clear whether I’d have to do any more drying. I had plenty of fuel on board and I was sick of hanging out at the airport, so I flew up to that lot in Malaga that I plan to buy, landed, shut down, and spent about an hour sitting on the best view spot just watching the world around me. It was very restful.

After about 45 minutes, I figured I was done for the day so I started up again and headed back toward Quincy. I’d gotten as far as the Rock Island dam when my phone rang. It was a client. I made a big, sweeping turn at 110 knots and headed back to dry that 35 acres in Monitor (again).

By the time I was done, it was after 5 PM. Mike had called to let me know that we’d been invited to go out for dinner (and possibly drinks) with another pilot and his grower clients in Quincy. And I still had that bee swarm to catch. And I needed a shower. Desperately.

I headed back to Quincy.

By 7 PM, I’d caught the bee swarm, showered, and was sitting down with new friends in the Moose Lodge (really!) in Quincy WA.

It was 8:30 when a grower in East Wenatchee called me. He was not one of my clients, although I’d tried at least twice to sign him up. He preferred to hang around at the airport and make friends with the pilots so he could convince them to dry his trees off contract. That made it possible for him to avoid paying standby fees. He had apparently been successful doing this for several years.

But that evening, he was in dire straits. It had rained again in Wenatchee and his orchard was soaked. And he couldn’t find any pilot to come — they were all busy drying orchards under contract. (That’s why growers contract with us. Duh.) He seemed to think I might be flying in the area and could squeeze him in. I told him I was in Quincy and done for the night. He hinted that he might want to get on contract with me. I told him I was already at capacity for both of my ships. I told him that if he’d contacted me earlier, I might have been able to add another ship and pilot and cover him under contract. I told him it was too late to launch from Quincy anyway. (For the record, I would have launched right up until 8:45 for a client under contract; sunset was about 9 PM that night.)

When I hung up, I felt bad for him, but also kind of glad that he was being taught a valuable lesson. But I discovered that he found another pilot to dry for him after all — probably first thing in the morning. (Some of the pilots need to be taught a lesson, too.)

Total for the day: 196 acres, 5.7 hours of flight time.

Day 3

I was awake the next morning at 3:51 AM when I got a text from one of my clients telling me to dry all four of his orchards in the Wenatchee area. It had rained overnight and he needed them dry before the sun hit them.

Morning Dry
I used GPS track on my phone to show exactly where I flew on Wednesday morning. I started in Quincy, went to Monitor, then Malaga, then Wenatchee Height. Then I refueled at the airport, dried an orchard up Squilchuck Canyon, and returned direct to Quincy. 112 total miles.

I texted him back and told him I’d be at the first orchard at 4:45 AM. Of course, I was still in bed when I texted this. And the orchard was 30 nautical miles away — the farthest one. And it was still dark out.

I got up, made coffee in a travel mug, and pulled on my flight suit while Penny was out doing her business. Then I lifted Penny back into her bed, pulled the cover off Alex the Bird, grabbed my coffee, and headed out.

I preflighted with a flashlight and had the engine running by the time the horizon became clear. I took off and flew a semi-direct course. I was hovering over the first row of rainier cherry trees on the east side of the orchard at exactly 4:45. That simply amazed me.

Nice sunrise, too. A thin layer of stratus clouds kept the area shaded but glowed pink as the sun rose.

I was over the second orchard when I called Mike to let him know I was flying already. He flew later that morning in Quincy.

Maria and Penny
Cheryl snapped this photo of me in my flight suit with Penny shortly after my return from flying.

It was a quiet day — just the four orchards totaling 96 acres. I was done before 9 AM and after refueling, went back to Quincy. I spent the rest of the day packing my my RV in preparation for moving it to Wenatchee Heights for the rest of the season. Unfortunately, my next door neighbor had parked in such a way that I couldn’t hook up my pickup truck to the trailer. So I had to wait until 5:30 to leave. It was mostly sunny most of the day in Quincy and kind of hot and humid. I ran the air conditioning for a while.

At 6 PM, Mike, his wife Cheryl, and I headed to Wenatchee Heights. Mike was driving my truck and trailer. Cheryl was driving my Jeep towing my boat. (Mike and his replacement guy Ron are using the Jeep while they’re working for me.) And I flew up in the helicopter. I beat them there (of course) and was visited by neighbors I hadn’t seen since the previous season. Then they arrived and we parked the trailers. They drove off in the Jeep and I started settling in.

I left in the truck at 8 PM to go back to Quincy and pick up the things I’d left behind: my kayak, my Traeger grill, some nice wood palettes I’d been collecting, and my captured bee swarm, which had been flying around its temporary home all day. I’d gotten as far as Rock Island by 8:20 when my phone rang. Could I dry that orchard up on Wenatchee Heights?

If I’d been at my base — where technically, I should have been while on standby — the answer was yes. So even though I had to drive 20 minutes to get back to the helicopter and that would make it very late indeed, the answer was still yes. I turned around and drove, calling Mike along the way to let him know I wouldn’t make it there that night.

At 9 PM, right around sunset, I was hovering over the last 19 acres I’d dry that day. I was on the ground at my new base, only 2-1/2 miles away, by 9:30 PM.

Total for the day: only 115 acres in 3.6 hours, at least 1 hour of which was (non-billable) repositioning time.

Day 4

By Wednesday night, I thought the drying flights were over. There was a very slight chance of rain the next day — only 20% — when I went to bed. After years of watching weather here, I can tell you that 20% is barely worth thinking about.

So imagine my surprise when I got a call at 4:54 AM from a grower telling me that it was raining in Monitor and he’d likely need me when it stopped.

I got out of bed, made my coffee, took care of my critters, and suited up. The call to dry came at 5:45 AM from a different grower in Malaga. And that’s when the fun began.

Orchard in the Clouds
For a while, the orchard I was waiting to dry had a cloud sitting right on it.

For the next few hours, I dried six different orchards — two of them twice — stopping only to wait out another rain storm and to refuel. It got intense for a while: while I was drying the third orchard, I had my next two orchards lined up and waiting for me. But everyone stayed calm, including me, and it got done timely. Indeed, after finishing all my orchards at around 11:30 AM, I saw other pilots heading out to start drying other ones near mine.


I waited at my base in Wenatchee Heights for rainstorm to pass through the area. This nosecam video clip shows my minute-long “commute” from my base to the orchard I dried across Squilchuck Canyon. There were lots of low clouds that morning.

Total 162 acres in 4 hours of flight time.

I was finally able to retrieve my possessions (including bees) in Quincy that evening.

Enough Already!

You know what they say: be careful what you wish for. This past week was a real lesson in that.

All cherry drying pilots want it to rain. Rain = money. But how many of us want it to rain this much?

I certainly don’t.

There comes a point where there’s so much rain that helicopters simply can’t keep the cherries dry enough to prevent splitting. I’ve heard loss numbers ranging from 10% to 50% in orchards that do have helicopters on contract. (This is better than another grower I’m in touch with who doesn’t use helicopters and had 60% splits; he’s not picking at all.) I’d also heard that loss rates were so bad in Mattawa (south of me) that growers gave up and stopped calling helicopters to dry. That doesn’t do us any good at all.

And while it’s nice to be able to send out invoices, I admit that I felt bad for my clients when I sent out the ones for this week. When you have a 35 acre orchard that needs to be dried multiple times in a day multiple times in a week, the costs climb quickly. Yes, that’s revenue for me. But it’s also a huge cost for the grower. While my services will make the difference between a crop that can be picked and sold and one that’ll rot on the trees, it must be painful for them to face such large bills.

But most of all was the sheer exhaustion I felt after hours of hovering at treetop level over fruit trees — especially the ones in orchards planted in steep terrain with numerous obstacles to avoid. It’s tedious, dangerous work. Three helicopters were lost so far this season: a JetRanger went down in bird netting near Royal City, a 500 had a wire strike that took it down, and an R44 had a wire strike that I’m still waiting to learn more about.

I can’t argue the profitability of a rain-filled week. I dried a total of 718 acres of cherry trees with 21.8 hours of flight time. I billed accordingly.

And I still have 6 weeks left in my cherry drying season.

Hail
This hail fell in Prosser, WA this morning. So glad it didn’t fall anywhere near my helicopter.

Right now, it’s cloudy outside, with thunderstorms rolling through the area. Ron dried an orchard in Quincy 1-1/2 times. (It started raining when he was half finished so he waited it out and restarted.) I’ve been watching severe storms moving northeast through the area mostly east of me. A severe storm passed over Lake Chelan at Manson near where my friend Jim is based with his helicopter. One of my growers sent me a photo of hail the size of…well, the size of cherries… that fell in the Prosser area. Hail like this can destroy a helicopter, so I’ll be covering mine up in case any storms like that pass through here.

Will I fly today? Who knows? In all honesty, I hope I don’t.

I’d like a rest — and I’m sure my clients would, too.

Postscript, 30-June-2013

Two things I’d like to mention.


Nick Henderson put this video of his cherry drying work on YouTube. Check it out.

First, I wound up flying another 5 hours on Saturday, drying a total of 208 acres. The rain came down fast and furious, with thunderstorms rolling through and flash flood warnings for Wenatchee. More than an inch of rain fell near where I’m based.

Second, fellow cherry drying pilot Nick Henderson put together this little video of his cherry drying work this week if you want to see what it looks like from the pilot’s point of view.

Today (Sunday) is a beautiful clear day — perfect for a well-deserved day off!

Watching the Weather

It’s that time of year again.

I’m deep into my sixth season in central Washington State, working as a cherry drying pilot.

It’s an interesting gig. I need to be available to fly at a moment’s notice on any day that it rains. But if it doesn’t rain, I don’t work. And if there’s no chance of rain, I can argue that I have the day off.

So my life revolves around the weather.

Radar
Current radar shows a storm system to the southwest heading my way. If it doesn’t dissipate, I expect it to arrive within 2 hours.

7-Day Forecast
There’s rain in the forecast for the next three days.

Hourly Forecast
The hourly forecast shows a 32% chance of rain now rising to a 47% chance at 5 PM.

I start every day with a look at the current radar on the Radar US app on my iPad or iPhone — and yes, both are nearby, even when I’m in bed. If there’s any rain in the area, I put the radar in motion to see which way it’s going. Then I look at the week’s forecast on the National Weather Service website. If there’s any chance of rain for the day there, I look at the hourly forecast to get an idea of when the rain is expected.

The screenshots here from my iPad gives you an idea of what all of these sources look like right now.

I tentatively plan my day based on this weather information. On a day like today, I won’t wander far from base. There’s a decent chance of rain and a look outside shows me the cloudy day that proves it. Although I won’t get called until it starts raining (or finishes), it could start at any time. So I’ll spend most of the day watching the radar and looking outside, waiting for my phone to ring.

On some days — Thursday comes to mind — it might rain all day. Although it seems like I should be flying all day I only fly when I’m called to fly. My clients don’t want me to fly more than I have to — after all, it costs them money when I fly — so they try hard to wait until they think it’s done raining to call me out. That’s what most of them did on Thursday. They let their cherry trees get and stay wet all day. Then at about 5 PM, my phone started ringing. 12 acres here, 40 acres there. I’d shut down and had even tied down the rotor blades for the night when I got another call at 8:20 PM with a request. I didn’t want to go — I don’t dry after dark — but the sun doesn’t set here until about 9 PM and even though the sun wasn’t out, I thought I’d have enough light to do another 34 acres 20 miles away. So I untied the blades and took off. While I was drying that orchard, a call to dry another 7 acres nearby came in. It was nearly dark when I finished that one, climbed to altitude to avoid wires and other obstacles, and headed back to base. I was on the ground at 9:40 PM — a lot later than I wanted to finish my flying day. But I did have happy clients.

Growers were likely able to get away with the long wet day on Thursday because it was so cool out. But I clearly remember a similar day last year when it rained all day long. Although one of my growers had me come out to “dry” several times during the day, another decided to wait until the end of the day. Guess which grower had split cherries the next day? It was a lot warmer that day and the guy who waited until the end of the day paid for his hesitation with a damaged crop. Unfortunately, he blamed me. I know better, but you just can’t argue with some people. I wasn’t too disappointed to lose that contract for this year. I don’t like taking the blame for someone else’s actions — or lack of actions.

But it makes me wonder: if they’re paying me to stand by and come quickly when called, why don’t they call?

Let’s do the math. A typical cherry orchard can bring in 8 to 15 tons of cherries per acre. If we use a conservative 10 tons (which was very reasonable last year, given the heavy set), each acre of trees yields 20,000 pounds of cherries. I can dry about 40 acres of trees for less than $1000. 40 acres is about 800,000 pounds of cherries. If the grower gets $1/pound for those cherries, that’s $800,000. Is it worth $1000 to protect that? I think so.

Keep in mind that if more than 50% of the cherries split or rot, the crop won’t be worth picking at all.

But hey — it’s their decision. I just watch the weather and fly when I’m called.

Of course, when there’s no chance of rain, I kinda sorta have the day off. I’ll wander farther afield — perhaps to Wenatchee or Leavenworth or even Chelan — keeping an eye on the sky and the radar. I’ll run errands, do chores, visit friends, shop, and eat out. Maybe I’ll take out the kayak on Quincy Lakes or my little jet boat on the Columbia River. The whole time I’m out, I’ll be thinking about the weather, watching the weather, being aware of how long it would take me to get back to base if the weather changes.

Traveling farther from base — for example, to Seattle or Portland — is completely out of the question unless another pilot stays behind to back me up. Right now I have one backup pilot and enough work for both of us. Later I’ll have another and enough work for all three of us. So traveling is not in my immediate future.

My life will go on like this until the end of my last contract, on or around August 15.

Smoking Ribs
I really do love my new Traeger. If you could only smell them…

I’m not complaining — not at all. Hanging around Quincy and, later, Wenatchee Heights, is not something a reasonable person can complain about. After all, I’ve got all the comforts of home — more, actually, because it isn’t 110°F outside — in my Mobile Mansion. And even now, as I type this, I’ve got 3 racks of St. Louis ribs on my new Traeger grill, smoking away.

With luck, we’ll get a chance to enjoy them fresh and hot before the rain comes.

My Helicopter is NOT a Birdhouse

Or is it?

Like I did the past four summers, this May I parked my helicopter outdoors at an ag strip — a simple runway used by crop-dusters — near the RV park where I begin my summer work season in Quincy, WA. (My first season here, in 2008, I managed to get a hangar at Quincy Airport.) My “helipad” is a concrete tie-down pad, created long ago when the ag strip was busier and was home to more airplanes.

These days, the strip is home to just one crop-duster, a yellow turbine biplane that barely fits inside a big hangar on the strip. That airplane’s predecessor was parked, partially disassembled, on the concrete pad in front of mine, tied down with frayed ropes. Its big radial engine had bled out its oil reserve years ago, leaving a grimy patch on the pavement that had absorbed dust and dirt and small pebbles throughout the years. Last year, part of its tail section was taken away. What remained was broken and forlorn, a sad reminder of what might have been a glorious past, its bright yellow paint faded and dirty from a long spell in purgatory outdoors.

Parking at the Ag Strip

Over time, birds had built nests inside its wings. They’d done this long before I arrived in 2009; I saw them come and go right from the first day I was there. Bits and pieces of straw stuck out of odd places. A bird would perch on a strut or cowling, then disappear into the airframe. I watched them while I was warming up my aircraft for a flight, or when cooling down at the conclusion of one.

The plane was still there when I arrived this May. But a few days later, I saw a flatbed trailer working near it. And then, one day, it was gone.

I hoped it was going to a new home, someplace where it would be rebuilt and would return to the sky.

Birds in the Fan Scroll

I was in Phoenix later that month, dealing with personal business, when my phone rang. It was the owner of the ag strip, Randy, who also flew the turbine crop-duster in the hangar. He’d never called me before. I didn’t even know he had my number.

“What’s up?” I asked him after we exchanged greetings.

“I’ll let Dalton explain,” he said.

I think my blood pressure must have jumped up a few points. Dalton was Randy’s ground guy. He spent a lot of time tearing around the strip on an ATV, running between the hangar and the refueling area and chemical loading area. I imagined him having some kind of mishap that involved the helicopter.

“I saw some birds flying in and out of the back of your helicopter,” Dalton told me. “When I looked in there, it looked like they were building a nest. I covered it up so they couldn’t get back in,” he finished.

Okay. A bird nest. Not something I wanted to deal with, but at least it wasn’t some sort of accident that involved the helicopter’s airframe. I thanked him for keeping an eye on things for me and for covering it up. I told him I’d be back in a few days and we hung up.

It made sense, when I thought about it. With the big biplane gone, a lot of birds were homeless. They moved to the closest replacement — my helicopter.

Nest in the Fan ScrollWhen I returned, I found the fan scroll cowl covered with cloth that turned out to be two old coveralls. I pulled them off to find a mess in the back end of the helicopter. Birds had flown between the fins on the fan scroll cowl (consult photo above) and had brought all kinds of hay and twigs. They’d left nesting materials inside the cowl and inside the fan itself. And there was a ton of bird poop.

What a mess!

I returned to my RV to fetch my battery powered screw driver, some hot water, and some rags. Then I got to work. First I removed the two screws holding in one of the fan cowl fins and attempted to remove all the material by reaching in. It soon became obvious that that simply wouldn’t work. So I removed the entire cowl — which involved removing about 20 screws — and began scooping out the junk I found. It took quite a while; there was an amazing quantity of the stuff. I wiped up as best as I could with the water and rags.

By then, Randy and Dalton had come by to chat. They told me to use the hose in the hangar. So I carried the filthy cowl into the hangar and cleaned it as well as I could with the hose and a brush.

Plastic over Fan CowlWhen I was satisfied all the nesting material was out and the cowl was as clean as I’d get it, I put it all back together. Then I used plastic bags to cover up the fins so birds couldn’t fly back in there. That would have to protect it until I flew again.

I should mention here that I opened all the inspection doors and looked carefully throughout the interior of the cowling to make sure that was the only nest they’d built. I admit that I was surprised that they hadn’t built anything in the main inspection area, near the upper sheave, beneath the hydraulic reservoir, or under the main rotor gearbox. I tapped on the mast cowling and tailcone in an attempt to scare out any birds that might be in there. Nothing. Not any other trace of birds anywhere.

What a relief.

Flying an Aging Aircraft

I started doing a lot of flying a few days later — charter flights, mostly. I removed the plastic bags, preflighted thoroughly, and saw no other sign of birds. When I flew, everything seemed fine.

Well, I did notice that the engine seemed to run a little warmer than usual.

The cylinder head temperature gauge has a little tick mark about 2/3 from the top. In the 8 years and 1600 hours I’ve flown the helicopter, temperature in flight is usually right around this line. It might be slightly to the left (cooler) on a cool day and slightly to the right (warmer) on a hot Arizona day. I’d never seen it to the right of the line in Washington state — it simply didn’t get hot enough. Yet that spring the temperature consistently reached and edged slightly past that line.

The engine was running warm.

At the same time, I noticed that the engine was warming up a bit quicker than usual. I figure it was because outside temperatures were pretty warm. That would also explain why it took a bit longer to cool down.

I also noticed a slight decrease in performance — I simply couldn’t maintain the 110 knots cruise speed I’d usually gotten when flying light. That could have something to do with the accumulation of dust and bird poop on the top of the main rotor blades. I cleared it off as best as I could as often as I could. I also figured that the performance issues might have something to do with engine compression; I’d learn more at its next 100 hour inspection.

Hell, my helicopter was getting old. Little changes like this were bound to happen.

Overall, however, the helicopter ran smoothly without any problems. I did numerous charter flights and numerous cherry drying flights without any problems whatsoever.

I did also notice some fresh bird poop on the fan scroll cowling, but regular examination of the area failed to show any trace of bird habitation. I figured that the birds just liked perching and pooping there with their old biplane home gone.

I should have known better.

The 50-Hour Inspection

I dried 73 acres of cherry trees yesterday morning. Afterwards, I landed at Wenatchee Airport, waiting for more expected weather to move in. I had just 2 hours left on my Hobbs meter before I’d need a 50-hour inspection. A 50-hour consists of an oil change with a filter change plus the removal of the spark plugs for inspection and cleaning.

When it became obvious that weather wasn’t moving in anytime soon, I figured I’d get the 50-hour inspection taken care of while I was there; more rain was expected the next day and I didn’t want to overrun the inspection time. I ran up the engine and repositioned the helicopter in front of Alpine Aviation’s hangar. While I was driving down into Wenatchee to fetch a case of oil, the excellent mechanics there would drain the helicopter’s oil and start working on the plugs.

Bird NesI was gone about 45 minutes. (I admit I also stopped at Dairy Queen for a chocolate shake.) When I returned with the oil, I saw a bird nest, complete with pale blue eggs, on the floor in the hangar.

I put the case of oil down and looked up at the ceiling. “Did this blow off the roof or something?” I asked Mike, who was working nearby.

“No,” he replied. “Cass pulled that out of your helicopter.”

I stared at him. “You’re kidding.”

But Mike wasn’t kidding. “He’s got quite a mess to clean up.”

I went outside to take a look. The left side panel was off and the panel that normally hid the top half of the engine was also off. Cass was pulling bits and pieces of straw off the engine’s cooling fins.

Nest on my Engine“I got a picture of it,” he told me. On his phone, he showed me a photo of the engine with hay stuffed into the area on top of it.

“Both sides?” I asked.

“Mostly this side,” he assured me. “But it’s in the oil cooler, too.”

He spent an extra half hour with a shop vac and compressed air, cleaning the nest out of the engine compartment. Mike waited until he’d gotten most of it out before pulling the plugs on that side.

As you might imagine, I was troubled by this. A preflight inspection should find problems like this. But mine hadn’t. The nest had obviously been in there for some time — perhaps a month or more. It was probably causing the warm operating temperatures I’d noticed. (With luck) it could be causing the dip in performance, too.

Fortunately, it hadn’t caused a fire.

I talked to Cass about it. He assured me that there was no way I would have spotted it on a preflight. He had to remove two panels — both of which were secured with screwdrivers — to see the nest. This is not something that’s done on any kind of standard preflight inspection. And since the temperature and performance issues I’d noticed were not substantial, there was no reason to go beyond a standard preflight inspection.

Lessons Learned

A few lessons can be learned from this experience:

  • If an aircraft is left outdoors, in an area known for bird nesting activity, a preflight inspection should include a search for any bird activity at all. Poop is a good indication of bird activity.
  • If an aircraft you’ve been flying for years suddenly shows any change in gauge readings or performance, it could indicate an issue that needs to be found. Look beyond a preflight inspection; think about what could have changed since you noticed the different readings.
  • A preflight inspection cannot uncover all problems with an aircraft. It’s limited by what you have access to when you make the inspection.

Knowing all this, would I do anything different? Yes. The next time I see a change in the helicopter’s gauges or performance, I’ll follow up with a mechanic. I may have been lucky this time; I might not be so lucky next time.

Aerial Views from Yesterday’s Flight

A few screen grabs from GoPro video.

I did a 3-hour charter flight yesterday, taking a good client to visit cherry orchards between Wenatchee and the Tri-Cities area of Washington. Along the way, we overflew the Columbia River and vast deserts and orchards. I had two GoPro Hero cameras hooked up: one on the helicopter’s nose and one on the right skid.

Here are a few screen grabs from my flights.

Ancient Lakes
These are the Ancient Lakes at Quincy Lakes, shot by my nosecam as I descended into the area from the Quincy Basin. If you’ve ever heard of the Ancient Lakes AVA for wine, these are the lakes that name refers to.

Rock Island Dam
I like this nosecam image of the Rock Island Dam, mostly because of the cloud reflections.

Rock Island Dam
A view of the Rock Island Dam from my skidcam.

Bridges
The bridges across the Columbia River between Wenatchee and East Wenatchee, shot from my nosecam.

East Wenatchee
A bird’s eye view from my skidcam as we flew over the bridge to East Wenatchee.

Columbia River at Richland
Crossing the Columbia River from west to east near Richland, WA. This time last year those islands were almost completely submerged with snowmelt floods. This is a skidcam image.

Richland Airport
A nosecam view of Richland Airport in the Tri-Cities area.

Desert
It might be hard to believe, but this area of Washington is desert. This nosecam image, shot east of Pasco, proves it.

Orchards
In this nosecam image, you can see the Snake River just upstream from the Ice Harbor Dam. My third landing zone was at a shop in the clump of trees on the upper right. You’re looking at thousands of cherry and apple trees here.

Even More Trees

Did I say thousands of fruit trees? There are millions in this skidcam image shot near Saddle Mountain.

Rock Island
This early evening skidcam shot of Rock Island and Malaga offers a good look at the terrain of my future home. I’ll be living at the base of those cliffs across the river by Christmas.

Unanticipated Yaw

Some comments about one of Robinson Helicopter’s latest Safety Notices.

In May 2013, Robinson Helicopter issued Safety Notice SN-42, Unanticipated Yaw. It said, in part:

A pilot’s failure to apply proper pedal inputs in response to strong or gusty winds during hover or low-speed flight may result in an unanticipated yaw. Some pilots mistakenly attribute this yaw to loss of tail rotor effectiveness (LTE), implying that the tail rotor stalled or was unable to provide adequate thrust. Tail rotors on Robinson helicopters are designed to have more authority than many other helicopters and are unlikely to experience LTE.

I discuss LTE a bit in my 2009 blog post, “How Much Wind is Too Much Wind?” You can also learn about it on Wikipedia and in the FAA-published Helicopter Flying Handbook.

Bell 206 Tail Rotor
Bell 206 helicopters have dinky tail rotor blades. (Photo Credit: Dakota Air Parts.)

Robinson points out that its helicopters are designed to have more authority than many other helicopters. This is partly because Frank Robinson worked for Bell, which has notoriously poor tail rotor authority, where he became known as a “tail rotor expert.”

I experienced the difference between tail rotor authority in a Robinson vs. another helicopter firsthand in 2004, when I flew Bell 206 Long Rangers at the Grand Canyon. After years and at least 1200 hours experience flying Robinsons, I was in a quartering tailwind at the Papillon helipads one day and got into LTE. I pressed the pedal enough to stop the rotation in a Robinson, but the yaw didn’t stop — I wasn’t flying a Robinson. Fortunately, I had the presence of mind to press harder on the pedal and get the situation under control before the rotation had reached a full 90°. It taught me a very valuable lesson about unanticipated yaw.

Robinson’s Safety Notices are normally issued in response to specific accidents. I went fishing on the NTSB website and discovered this April 2012 accident. Probable cause was issued on May 23, 2013 and that would be the right timing for a Safety Notice to appear. (Of course, I can’t be certain whether this is the accident that sparked the new Safety Notice. It’s just a guess on my part.)

From the report summary:

The helicopter slowed as it approached the landing zone on a modified right-base turn to the north. Gusting wind from the south had prevailed for most of the day and was present at the time of the accident. As the pilot turned to “enter the landing area,” he felt a “bump” in the tail rotor control pedals. The pilot added that he applied left pedal to compensate for a right yaw, and the helicopter immediately “started to rotate” at an increasing yaw rate with full left pedal applied. The pilot stated that the rotation stopped when he pushed the collective control “full down” and applied aft cyclic. The helicopter then descended through the trees and collided with terrain. Examination of the wreckage revealed no evidence of pre-impact mechanical anomaly.

The accident report goes on to provide general information about LTE. The Full Narrative refers to FAA Advisory Circular (AC) 90-95 “Unanticipated Right Yaw in Helicopters.” It also refers to Robinson Safety Notice SN-34, Photo Flights – Very High Risk as it pertains to settling with power, reduced RPM, and the loss of tail rotor thrust in low RPM situations. All of this is good reading to learn more about LTE and tail rotor operation.

It’s in low-speed situations that tail rotor effectiveness can be lost. At higher speeds, the helicopter points into the wind via normal “weathervaning.” The vertical stabilizer on the end of the tail helps make this happen. But at lower speeds, especially when turning into a tailwind, the force of the wind can easily cause the helicopter to yaw. The pilot must react quickly and firmly to stop and correct the yaw.

Experience teaches us. Years ago, I was doing a long cross-country flight with a 300-hour pilot who had just gotten his CFI. He was landing at San Luis Obispo (SBP), sitting in the left seat while I sat in the right. There was some yaw and I think he tried to correct it with the pedals. But then he panicked and said that something was wrong, that the pedals weren’t working.

I don’t recall the yaw being very bad. We were still moving along at a good clip, barely over the runway and likely doing at least 50-60 knots. I told him to push the pedal and he claimed he was and that it wasn’t working. He was visibly upset. I offered to take the controls and he agreed. I pushed the appropriate pedal and the helicopter immediately straightened. I landed without incident.

When I read this Safety Notice, I immediately thought of that low time pilot’s approach to landing and my own experience, years before, at the Grand Canyon. In both cases, we’d initially failed to use enough pedal to correct the yaw. The difference is, while I’d added more pedal when necessary, the low-time pilot had assumed there was a problem with the aircraft without trying harder to correct the yaw.

I have to wonder whether the accident pilot was in the same situation. After all, probable cause put the blame firmly on him:

The pilot’s inadequate compensation for wind during a high-power, low-speed downwind turn, which resulted in a loss of control due to loss of tail rotor effectiveness and settling with power. Contributing to the accident was the pilot’s decision to land downwind.

I guess the takeaway from all this can be summed up as follows: We always need to be aware of potential control issues, especially when operating at low speeds in crosswind or downwind situations. Yaw should never be “unanticipated.” It’s the pilot’s responsibility to keep control of the aircraft at all times by avoiding situations that could result in control issues and to use aircraft controls properly.