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Key Takeaways:

  • Two light sport aircraft (LSA) crashes in 2007 were attributed to pilots failing to maintain airspeed, resulting in stalls, often exacerbated by high-density altitude conditions and, in one case, an overweight aircraft.
  • The NTSB heavily criticized both LSA manufacturers for significant deficiencies in their Pilot Operating Handbooks (POHs), including conflicting airspeed data, confusing weight and balance information, and poorly translated flight instructions.
  • The article emphasizes that LSA manufacturers must prioritize producing aircraft with benign handling characteristics and providing clear, accurate, and accessible documentation suitable for less experienced pilots and flight instruction.
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In 2007, two airplanes crashed a month apart, in somewhat similar circumstances. Both were light sport aircraft of European manufacture; both had two aboard; both stalled and spun from low altitude. In its findings of probable cause in the two accidents, the National Transportation Safety Board raised issues that should be of concern to light sport users and manufacturers.

The first accident took place in New Mexico in August, and involved a Zlin Aviation Savage, which is a small high-wing taildragger in the Cub/Champ style powered by a 100 hp Rotax engine. The airplane was being used to survey some ranch land for a new road; two were aboard. The 57-year-old instrument-rated private pilot, who had nearly 4,000 hours, had previously flown at least five hours in the Savage, including an hour-long checkout flight five days before the fatal accident. The instructor who checked him out described the pilot as “excellent,” and very well acquainted with the aircraft flight manual.

Peter Garrison

Peter Garrison taught himself to use a slide rule and tin snips, built an airplane in his backyard, and flew it to Japan. He began contributing to FLYING in 1968, and he continues to share his columns, ""Technicalities"" and ""Aftermath,"" with FLYING readers.

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