NTSB Identification: ERA10LA108
Nonscheduled 14 CFR Part 135: Air Taxi & Commuter
Accident occurred Thursday, December 31, 2009 in Concord, NC
Probable Cause Approval Date: 09/27/2010
Aircraft: PIPER PA-32R-300, registration: N8985C
Injuries: 1 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.

While landing following an uneventful flight, the right main landing gear collapsed. An inspector from the Federal Aviation Administration found that an attachment bolt and retainer assembly had backed out of the aft landing gear trunnion assembly. The landing gear then separated at the aft trunnion. The barrel nut that held the attachment bolt was missing, and was not subsequently located. The inspector also noted no evidence of any pertinent maintenance performed within the previous year. Following the accident, the operator inspected all 30 fleet airplanes with no similar anomalies noted. In addition, all aircraft maintenance technicians were briefed on the accident and alerted to the area where the gear attachment hardware separated.

The National Transportation Safety Board determines the probable cause(s) of this accident to be:

A missing right main landing gear aft trunnion mount attachment nut.

Full narrative available

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