Accident Probes

Boeings 727 has always been one of my all-time favorite airplanes. Ive never flown in one as anything other than self-loading freight, but Im old enough to remember when the 727 (and the DC-9) brought jet comfort and performance to smaller, outlying airports where the eras long-haul mainstays-707s and DC-8s-couldnt operate. These days, of course, economics-fuel burn, plus the need to pay three pilots-and noise regulations have relegated the venerable three-holer to tramp-freighter status or the scrapyard.

Theres an opinion among some pilots and mechanics that inspections and scheduled maintenance can do more harm than good. By constantly disassembling and reassembling an aircraft to inspect it, they argue, were prematurely wearing out the aircraft and actually making it less safe. Those same pilots and mechanics note that this is largely true, in their opinion, for aircraft that arent flown very much. For more active aircraft, however, they acknowledge that regular inspections and maintenance are less intrusive and, in fact, beneficial.

The landing was normal, and I took a close look at the left landing gear after shutting down but couldnt find anything amiss. The tire and wheel looked good, and there was no hydraulic fluid seeping from the strut. The brake was secure and had tested fine on the landing, and when taxiing in. There was no damage to the wing, the landing gear door or any other part of the airplane. Not finding anything wrong with the airplane I forgot about it, wondering if I had imagined it. Ultimately, I figured Id hit a dog with the landing gear and, sadly, someone had lost their pet.

During a scheduled inspection, technicians encountered corroded and bent control yoke boss attachment hardware that proved difficult to remove. After consulting with the manufacturer, the final recommendation was to remove the boss via cutting the bolts (p/n 2315152-33). Manufacturer was able to repair the yoke assembly using SB 31-27-11 and kit 2381602-801. Aircraft had been parked outside without gust locks.

As part of its charter to help minimize GA accidents, the General Aviation Joint Steering Committee (GAJSC; see the article beginning on page 4 for background) earlier this year published a Best Practices Guide designed to ensure airplanes equipped with turbocharged reciprocating engines fitted with turbocharger to tailpipe V-band coupling/clamps, remain in their original type design configuration. It will also help to effectively manage the risk associated with the use of V-band coupling/clamps in this application.

Like thousands of my closest friends, I made the pilgrimage to Oshkosh, Wis., in late July for the Experimental Aircraft Associations annual AirVenture Fly-In and Convention. As has been the case with the show in recent years, the 2018 edition set another new record for attendance, with some 601,000 people moving through the gates. At Oshkoshs Wittman Field, there were 19,588 aircraft operations during the 11-day period from July 20-30, according to EAA, an average of approximately 134 takeoffs/landings per hour. I contributed two of those operations.

• Takeoff Performance
• Part 135 Transition
• Smarter Than Direct
• Ground Ops
• Paperwork

Beech Model 65 Queen AirFailed Gear Limit SwitchLanding gear limit switch (p/n MS250261) failed to stop motor during retraction, causing landing gear circuit breaker to pop. Aircraft landed without incident. Re-rigged the switch IAW maintenance manual. Retraction test and ops check okay.Part total time: Unknown

My Debonair had to go to the avionics shop recently for its 24-month pitot/static and transponder checks, and to diagnose an autopilot that wouldnt. As I feared, autopilot system components had to go out for factory attention, and the removal work would take longer than my schedule allowed. So I left the airplane and Uberd home. Before I had the free time to retrieve the airplane, my part of Florida was seeing a constant flow of moisture and showers coming in from the Gulf of Mexico.

1) A Piper PA-32R-300 Lance attempted to take off from a 3200-foot-long grass runway on a June morning with flaps retracted. It lifted off at the end of the runway, then descended into a shallow valley, touched down and lifted off a second time, before settling back to the ground and colliding with a barbed-wire fence. It was later determined to have been 188 pounds over its maximum gross weight with its center of gravity 0.15 inches aft of limits. Density altitude was about 1800 feet above field elevation.