Accident Probes

Airplane performance and good maintenance are closely related. The figures published by the manufacturer are frequently viewed as optimistic once an airplane is put into service-and suffers prop nicks, bugs on the leading edge and a couple of bad landings-but book numbers can be achieved even years later. When actual performance differs from the published numbers, its often because the airplanes condition has diminished over the years and hours of use. The level of maintenance an airplane has received over the years will have a significant impact on its overall performance.

Most of us start our piloting careers in some sort of basic trainer. Some pilots flying purely for sport or recreation may stay with simple fixed-gear airplanes and stick to VFR conditions. Others learned to fly to travel somewhere for some purpose and on their own schedule. Nothing beats a personal airplane for that purpose, but trying to do it single-pilot in all-weather conditions can tax even the most capable general aviation pilots. As Dave Higdon explored in last months article, Entry-Level Travel, its possible to use simple fixed-gear airplanes for personal transportation, but a more-capable airplane makes it easier.

Stabilized approaches have gotten a lot attention lately, not only with those who fly airplanes, but also with the general public. The proliferation of video cameras has done quite a good job of educating people on how an otherwise airworthy aircraft can be flown into the ground. As the images play out on the screen, a disembodied voice inevitably will at some point attribute the carnage to an approach that was not stabilized.While the voice might not mention just what that thing that was lacking in said accident really is, people will at least remember the phrase the same way they remember words such as shark, fire, disco or myocardial infarction. The true meaning is vague, but they do know it is usually associated with something bad. With that in mind, lets add some clarity by reviewing what a stabilized approach is. Perhaps if we understand what it is, we can then fly it.

Everything that can be invented has been invented is a popular quote attributed to Charles H. Duell, commissioner of the U.S. Patent and Trademark Office from 1898 to 1901. Today, the quote often is used to ridicule those who refuse to embrace the latest technology or believe nothing new will be forthcoming. The thing is, Duell never said that. He said quite the opposite instead: In my opinion, all previous advances in the various lines of invention will appear totally insignificant when compared with those which the present century will witness. Yet, hes not remembered for that statement, only the former, erroneous one.

At 1529 Pacific time, the airplane struck powerlines and traffic lights, then collided with the ground after a loss of engine power during takeoff. The pilot was not injured; the passenger received minor injuries. The airplane sustained substantial damage. Visual conditions prevailed.

Ive always enjoyed flying at night. Theres usually a lot less traffic, the ATC frequency is quieter and its rare to be delayed for an approach, landing or takeoff. Sunsets can be quite amazing from a personal airplane, and Ive been fortunate enough to witness a few sunrises, too. Owing to day-job schedules and airplane availability, most of my instrument training happened at night and, even with all that going on, Im by no means an expert on flying in the dark.

Engine-out training teaches us to maneuver the airplane to a position from which a more-or-less normal landing can be made on an open surface. Among the elements to this training are that theres a finite amount of time and energy, in the form of altitude, available to get the airplane to the landing area. Maneuver the airplane to a key position abeam the runway at a certain altitude and airspeed, and it will have enough energy to glide to the runway as the pilot manages airspeed and turns.

At about 0842 Eastern time, the two airplanes were destroyed in an in-flight collision. The airline transport pilot flying the Cessna and the airline transport pilot flying the Grumman were both fatally injured. Visual conditions prevailed.

Theres really no question that maintaining radio and radar contact with ATC significantly adds to flight safety, whether youre IFR or VFR, and whether youre going somewhere or just boring holes. But its vitally important to remember that when your communications are lost, airplanes fly on physics discovered by Bernouli, not on communications pioneered by Marconi.

The number 3 cylinder exhaust pushrod broke, due to a valve stuck in the closed position. The valve was not stuck at the time of the investigation. No marks were seen on the top of the piston as viewed through a borescope. The lifter came apart as a result of the broken push rod but appears to have been operating properly prior to the event.