Accident Piper PA-22-150 N5706D, Thursday 6 January 2011
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Date:Thursday 6 January 2011
Time:14:30 LT
Type:Silhouette image of generic PA22 model; specific model in this crash may look slightly different    
Piper PA-22-150
Registration: N5706D
MSN: 22-4402
Total airframe hrs:3147 hours
Engine model:Lycoming 0-320 SERIES
Fatalities:Fatalities: 0 / Occupants: 2
Other fatalities:0
Aircraft damage: Substantial
Location:Thomaston, Georgia -   United States of America
Phase: Approach
Departure airport:Thomaston Upson County Airport, GA (KOPN)
Destination airport:Warm Springs, GA (5A9)
Investigating agency: NTSB
Confidence Rating: Accident investigation report completed and information captured
According to the pilot, the airplane had returned to service after being restored by an airframe and powerplant mechanic with inspection authorization. The pilot performed several takeoffs and landings prior to the accident flight, and noted that the airplane seemed to operate normally. The pilot departed to another airport where he completed a simulated instrument approach to about 50 feet above the runway. He then commenced a go-around over the departure end of the runway with the airplane about 300 feet above the ground. The engine experienced a partial loss of power and the pilot maneuvered the airplane a hay field, where he performed a forced landing. During the landing roll, the horizontal stabilizer struck a hay bale resulting in substantial damage to the empennage. A postaccident examination of the wreckage by a Federal Aviation Administration inspector revealed that a cotter pin was not installed on the throttle arm retaining nut. The throttle arm retaining nut was finger tight and the throttle arm was loose, which resulted in excessive play in the throttle linkage.

Probable Cause: The mechanic's failure to install a cotter retaining pin in the throttle arm retaining nut resulting in excessive throttle play and loss of engine power control.

Accident investigation:
Investigating agency: NTSB
Report number: ERA11CA108
Status: Investigation completed
Duration: 5 months
Download report: Final report




Revision history:

05-Oct-2022 15:40 ASN Update Bot Added

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