EAA Chapter 1241 Marathon, FL

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Kaitlin Hopkins, 17, daughter of Cindy and Rex Hopkins, Big Pine Key residents, received a $1,500 flying scholarship from the Marathon chapter of the Experimental Aviation Association (EAA). Kaitlin, a senior at Key West High School is getting her flight training from her dad Rex, a certified flight instructor and pilot for Mosquito Control Air Operations based at Marathon Airport. Kaitlin accepted the first of three $500 checks from Jerry Metcalf, the president of the local EAA chapter at the chapter’s monthly meeting on December 1, 2007.

Besides an interest in flying, Kaitlin is a member of the varsity soccer “Lady Conchs” at Key West High School. She hopes to become a pre-law student at Florida State University next year.

Kaitlin’s scholarship covers part of the cost of obtaining a private pilot certificate. Her parents are responsible for the rest. Her aviation medical examination came at no cost, provided by Julie Floyd, MD, of Key West. Kaitlin is the latest of three scholarship students sponsored by EAA Chapter 1241. Our last student, David Operchal, is now attending the Air Force Academy.

The Experimental Aircraft Association, best known for Airventure at Oshkosh, Wisconsin, its annual fly-in bringing in thousands of aircraft and hundreds of thousands of aviation enthusiasts, promotes all forms of flying; homebuilt experimental category aircraft, war birds, restored aircraft, the “Young Eagles” program headed by actor Harrison Ford, that provides free flights for kids, and local chapters like the Marathon chapter, who fly hundreds of young eagles every year and sponsor Federal Aviation Agency safety seminars at Marathon airport.

Kaitlin Hopkins and her father Rex Hopkins
 
A Really Nifty Homebuilt  

I
t looks a lot like Batman's personal Batplane.  You might have seen a sister ship in the EAA magazine and in other publications.  N18DW, a JD-2 Dyke Delta, was built and recently rebuilt by Dave Williams who is a member of our EAA Chapter 1241.

N18DW first flew in April of 1972 and in the 70s, wearing yellow and black colors, it was on the covers of several books and magazines. The aircraft had been in storage since the 1980's, but Dave decided a little more than a year ago to get her back into the air.  This time it is fitted with a 210 HP Lycoming IO-390-X that is 30 more HP than the original configuration.  He added a three bladed MT Constant Speed Propeller. The target cruise is 195 mph and a range of 900 miles or more.

Dave had help from Tom Bauer in Sabastion for some well needed assistance for the flight. Tom built his Delta a few years ago and his has over 2000 flight hours on it with Tom as the pilot. It was Tom’s Delta that was at Sun and Fun two years ago. Dave drove the airplane up to Immokalee for the initial test flight.  The open airspace and two long runways have a lot of appeal for this kind of activity.  Here is Dave's description. 

 
(See the Photo Album page on this site for more pictures of Dave's Project) 
I think that the initial flight of an experimental aircraft can best be compared to being locked into a confined space with all your ex-wives and girlfriends, all at the same time…………It will either be one of the best days of your life or the last day of your life!

Wooh Hoo!! Last Saturday was definitely one of the very best days I have ever known. Thanks to Tom Bauer's help, N18DW flew for the first time in 28 years at Immokalee, Fl.   The remaining taxi tests were completed between rain showers at ambient temperatures of 98 to 108 degrees F. The temperature in the cock pit likely topped 120 degrees F. from run up to runway exit when I was able to open the canopy as I exited the runway. This really slowed me down. In fact, we shut down the taxi tests early on Friday because the OAT indicated 108 degrees F in the run up area and I thought I could easily make a bad mistake under those conditions.  

The first flight went like this: The aircraft took off and climbed out just like old times. The conditions were turbulent from the heat generated thermal activity and the turbulence lasted until 3500 feet. I climbed out to 5000 feet, above the first layer of broken clouds to feel the aircraft out.  The primary purpose of the exercise was to determine the stability and get the approach and rotation speed of the aircraft. I tested the turn and roll rate at various air speeds and then determined that I would use 120 indicated for the downwind leg, 110 indicated for the base leg and 105 indicated for the final approach speed. I could have come down final at 100 but there was a lot of turbulence over some trees on the approach end of runway 9. I always add a few mph in turbulence. Please note that I don’t yet know what the airspeed indicator error is and the speeds were determined without prior experience biases. The speeds were determined by how the aircraft felt and a generous margin above stall speed for the first final approach. 

After making the decisions on the pattern speeds, I dropped down in 1000 foot intervals to 1000 ft and felt the aircraft out in the above context at each 1000 ft interval.  When I got down to pattern altitude I shot three or four twenty-foot high approaches to determine the power settings required to fly in the pattern and have good control of the rate of descent.  

During taxi testing, I lifted off and flared to land so I already knew how the aircraft would behave after touchdown. The only missing component of the first landing that I had not yet experienced was the actual screech of the wheels at touchdown so it was time to make the first full stop landing. The first landing went well but I dropped the aircraft in the runway a bit hard. No cigar, but a good landing anyway.  

Consider what happens with a constant speed prop when the engine can not make up the set point rpms. The governor causes the pitch to go flat in order to allow the engine to speed up and make the set point rpms. Also when the pitch goes flat there is a lot more drag and the aircraft will slow down quickly. If the aircraft slows quickly the rate of decent will increase and cause the aircraft to land hard and bounce. That is exactly what happened. The solution I discussed with Tom Bauer was very simple……SQUEEZE THE POWER OFF GENTLY AND YOU WILL GET A NICE L O N G  S C R E E C H AT TOUCHDOWN..  

When I rebuilt the airframe in the early 1980s I added an airspeed brake under the main spar which I removed in January of 2006 because I felt it would be unsafe because it would cause an unwanted downward pitch during deployment. I felt bad about removing it but the drag was below the center of lift and center of gravity and it would not have worked as desired. Had I been able to use the drag brake, I thought I could reduce the landing distance by 20 percent.

Lady luck was on my side however, because it is possible to use the constant speed prop as a drag brake simply by pulling the power completely off after flair and I can actually feel the deceleration. This will make for a significant reduction in the landing distance. It is too soon to tell but I may have achieved the effect of the drag brake by accident with the constant speed prop. I am excited to explore this aspect of the performance.   

The remaining flights consisted of gear retractions, low approaches, crosswind landings and touch and goes. Turbulence was always there on approach, but then I learned to fly on the desert in El Paso, TX so it was more of a nuisance than a deterrent. The most critical part of a flight is after the flair and just before touchdown and the turbulence is 500 feet behind the approach end of the runway.

I departed Immokalee on Monday for the 175 mile tow back to Key Largo. Towing the aircraft 350 miles to and from Immokalee was uneventful.
  Special thanks to Tom Bauer for spending the week in Immolakee with me and N18DW. I really needed someone to bounce thoughts and ideas off and I could not have picked a better person then Tom Bauer. THANK YOU AGAIN TOM !  

If anyone is going to test fly a delta be sure that you bring along another delta pilot, not just any airplane pilot. Although I have 500 hours of delta flight experience, I found Tom’s presence both helpful and reassuring. Twenty eight years is a long time to remember everything about handling the JD-2.  

Chapter member Bob Silber tells his story:

Doing what you never wanted to do: flying to a gear-up landing.


It happened on my wife Georgette's maiden voyage in my newly purchased Navion. I had flown the plane to Marathon from Mississippi on Thursday and Friday. On Sunday morning we flew to Key West for breakfast and then back to Marathon.


It was a clear VFR summer day. The trip to KEYW and back to KMTH seemed uneventful. We turned south after departing runway 9 Key West, and after some radio difficulties, contacted Navy departure and turned east for Marathon over the ocean.


Things went sour over the 7-mile bridge. I slowed and attempted to lower the landing gear for the approach.


I went through my pre-landing check list and pulled the knob actuating the hydraulic system. Pressure came up, I dropped the gear control lever, but I saw only two green lights: for the nose and left main gear indicating down and locked.


The right main indicator light ( which should have been green ) was blank and a red "UNSAFE" light glowed on the panel.


I re-cycled the gear and tried again but the same indications appeared. Then I tried the emergency procedures printed on my panel. I depressed the emergency gear release lever. The right gear would not drop. I tried manually pumping the gear down. The right would not drop. I lost count of how many times I repeated the normal and emergency procedures. Same story:the gear indication lights still showed a problem with the right main.


The next action was to dive and climb in order to induce negative Gs while attempting to drop the gear?same result. Complicating things, the negative G maneuvers frightened Georgette. But, she remained bravely quiet allowing me to concentrate on flying the plane.


The folks at the Crystal Clear Aviation FBO became a great support team.  When I over-flew Marathon airport at 200 feet they all piled outside and confirmed that the right gear was indeed up. I made several more attempts to lower the gear and over-flew the runway again. Same story; the right gear stubbornly remained up. Passing beneath my wing, a Cessna 172 pilot re-confirmed my problem as we flew downwind for Runway 25, left traffic.


The Delta Daily from Atlanta was due in while all this was happening, so I was asked to delay landing until the commercial flight put down. I had plenty of fuel so there was no problem complying. Circling during the next quarter hour, I came to grips with the reality that I had to perform a gear-up landing. But How?


Virginia at Crystal Clear Aviation scrambled Tony D'Auito who is an A&P, Warbird pilot, and volunteer fireman.  Tony combined everything I needed in one person and he did  a great job of talking me through the options on the radio. Maybe it was the innumerable touch and goes I had performed in my 500 logged hours. Maybe it was the strength and integrity of the Navion I flew. I don?t know why, but I felt strangely calm and confident. I knew and accepted that the plane would be damaged. I believed that I could safely land and that Georgette and I would walk away.


The commercial jet landed and taxied to the terminal ramp. Emergency crews gathered alongside the runway. Flying downwind for runway 7 and talking things over with Tony, I decided to land with all the gear up rather than risk a dangerous spin on the runway with a two-wheel landing.


When I asked what I could expect to happen Tony told me I would hear some terrible noises; that the plane would go straight for a while and then I would lose control of it.


We discussed the option of shutting down the engine and coming in dead stick, but we generally agreed that cutting the power would change the handling characteristics of the plane and the way it would land. My decision was to simply fly the plane to a normal landing?as if I really had landing gear.


I throttled back to landing speed and lowered flaps then I turned base for runway 7. On short final, I focused on the runway markings and a landing aim-point . We slid the canopy partially back and turned off the fuel (there was plenty of gas in a central accumulator tank to provide landing power). I forgot to turn off the master switch. Fortunately that did not matter; we had neither flames nor fire.


Over the runway, I flared the plane a little early, added power to avoid a partial stall and then landed smoothly. Georgette later remarked that it felt as though we had wheels, except for the noise.


We slid down the runway, the prop clattering, striking the ground. In the last few yards, as Tony predicted, I lost control of the plane. We veered right and came to a stop half-on and half-off the runway. A puff of smoke smelling of burning rubber came into the cabin. Later we learned that the main gear on both sides had dropped slightly and that we actually had landed on the sides of the tires. We scrambled out of the plane and fire-rescue people led us away.


Next came some very important comforting words, hugs, and handshakes from the people on the ground. The police drove us to the FBO where I gave a verbal account of the incident. Ironically, I learned that when the plane was lifted off the runway, the gear dropped into place. Go figure.


Then home and several stiff drinks.


Later, I reported the incident to the Airport manager, the NTSB, the FSDO, and my insurance company.


Aside from the prop, the airplane had surprisingly little damage (Click to see larger image)
Gear down and locked! (Click for larger image)

This article from AVweb is worth re-publishing here because of its safety value! 


Tuesday morning's fatal crash of a Cessna 310 in Sanford, Fla., soon after the pilot reported smoke in the cockpit, should be a reminder to pilots of how fast smoke and fire can travel in an airplane. According to a January 2006 article in AVweb sister publication
Aviation Safety, "an in-flight fire is a bona fide emergency … [and] you could have a matter of seconds before the fire incapacitates you or causes catastrophic engine or airframe failure, or more than enough time to find the nearest airport and land." In any case, time is of the essence during an in-flight fire since "the elapsed time between the first indication of a hidden fire and the point at which an aircraft is catastrophically uncontrollable has ranged between seven and 35 minutes, with an average of 20 minutes," according to a study referenced in the story. Possible indications of an in-flight fire are odor, smoke, component failure or uncommanded operation, sudden drop in fuel flow on fuel-injected engines, tripped breakers, hot spots, and/or electromagnetic interference. The article also gives some sage advice on what to do if an in-flight fire should strike your airplane.

Job one is that "you've got to get the airplane down and stopped so you can get out of it. There's little choice." On the way down, there are a few things mentioned in the article that you can do to try to extinguish or slow the fire: "If you think that the fire is airframe or engine related, turn off the fuel; if it is electrical, then turn off the master and alternator switch; if flames are visible, fight the fire immediately; if they aren't, do everything you can to find the source." Other bits of advice: always know where your fire extinguisher is located, don't reset popped circuit breakers, never ignore a strange odor or smoke, and, most important, "Fly the airplane. Land. No amount of fire extinguishing agent will help you find a runway, or a clearing." The Aviation Safety story recommends that a Class A/B/C fire extinguisher be carried aboard every airplane and that pilots reacquaint themselves with FAA Advisory Circular AC 20-42C, "Hand Fire Extinguishers for Use in Aircraft." An optional, but suggested, addition are smoke hoods, which have a multi-year shelf life and can buy "about 15 minutes of time," since they convert poisonous carbon monoxide to carbon dioxide, in addition to keeping smoke out of your eyes.



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