NTSB Identification: CHI90LA085.
The docket is stored on NTSB microfiche number 41363.
Accident occurred Sunday, February 18, 1990 in PONTIAC, MI
Probable Cause Approval Date: 09/29/1992
Aircraft: PIPER PA-28-161, registration: N8394D
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 INSTRUCTOR (CFI) AND DUAL INSTRUMENT STUDENT WERE TAXIING FROM THE RAMP TO THE ACTIVE RUNWAY WHEN THE LEFT MAIN LANDING GEAR COLLAPSED. POST-ACCIDENT INVESTIGATION REVEALED THAT THE LANDING GEAR BOLTS ON THE LEFT GEAR HAD FAILED. THE CFI REPORTED THAT THEY WERE TAXIING STRAIGHT AHEAD ON A SMOOTH, PAVED SURFACE, AND MOVING AT A NORMAL TAXI RATE WHEN THE ACCIDENT OCCURRED. THE FAILURES APPEARED TO BE DUE TO OVERLOAD; THERE WAS NO REPORT OF A PREVIOUS HARD LANDING IN THE ACCIDENT AIRCRAFT.
The National Transportation Safety Board determines the probable cause(s) of this accident to be: OVERLOAD FAILURE OF THE LEFT MAIN LANDING GEAR ATTACH BOLTS FOR AN UNDETERMINED REASON.
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