摘要: |
On September 16, 2011, about 1625 Pacific daylight time, an experimental, single-seat North American P-51D, N79111, collided with the airport ramp in the spectator box seating area following a loss of control during the National Championship Air Races unlimited class gold race at the Reno/Stead Airport (RTS), Reno, Nevada. The airplane was registered to Aero-Trans Corp (dba Leeward Aeronautical Sales), Ocala, Florida, and operated by the commercial pilot as Race 177, The Galloping Ghost, under the provisions of 14 Code of Federal Regulations Part 91. The pilot and 10 people on the ground sustained fatal injuries, and at least 64 people on the ground were injured (at least 16 of whom were reported to have sustained serious injuries). The airplane sustained substantial damage, fragmenting upon collision with the ramp. Visual meteorological conditions prevailed, and no flight plan had been filed for the local air race flight, which departed RTS about 10 minutes before the accident. The accident airplane was in third place during the third lap of the six-lap race and was traveling about 445 knots when it experienced a left roll upset and high-G pitch up. Subsequently, the airplane entered a right rolling climb maneuver. During these events, the vertical acceleration peaked at 17.3 G, and, a few seconds later, a section of the left elevator trim tab separated in flight. The characteristics of the airplane's pitch changes during the upset were such that the pilot's time of useful consciousness was likely less than 1 second. As a result, the pilot soon became completely incapacitated, and the airplane's continued climb and helical descent occurred without his control. The accident airplane had undergone many structural and flight control modifications that were undocumented and for which no flight testing or analysis had been performed to assess their effects on the airplane's structural strength, performance, or flight characteristics. The investigation determined that so |