NTSB Identification: CHI97LA098.
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Accident occurred Wednesday, April 02, 1997 in LAFAYETTE, IN
Probable Cause Approval Date: 09/05/1997
Aircraft: Piper PA-28-161, registration: N6148H
Injuries: 2 Uninjured.
NTSB investigators may not have traveled in support of this investigation and used data provided by various sources to prepare this aircraft accident report.
The CFI and student pilot were conducting night takeoffs and landings. The CFI stated that after the third landing touchdown, at an airspeed of approximately 30 knot, the right main landing gear strut began to shimmy and the gear collapsed. The airplane came to rest on the runway. The CFI stated they had used aft elevator pressure to slow the airplane and not the brakes. Metallurgical examination of the fractured landing gear strut/spar attachment screws revealed that two of the four screws contained fatigue cracking. The other two screw fractures were secondary failures.
The National Transportation Safety Board determines the probable cause(s) of this accident to be: a fatigue failure of the fight main landing gear strut/spar attachment screws. Full narrative available
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