ASN Wikibase Occurrence # 364372
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| Date: | Monday 14 October 1991 |
| Time: | 15:30 LT |
| Type: |  Piper PA-24-180 |
| Owner/operator: | Jenkins Aircraft |
| Registration: | N7759P |
| MSN: | 2975 |
| Total airframe hrs: | 2673 hours |
| Engine model: | LYCOMING O360A1D |
| Fatalities: | Fatalities: 0 / Occupants: 3 |
| Aircraft damage: | Substantial |
| Category: | Accident |
| Location: | Marysville, WA -
 United States of America
|
| Phase: | En route |
| Nature: | Private |
| Departure airport: | Arlington, WA (S88) |
| Port Townsend, WA | |
| Investigating agency: | NTSB |
| Confidence Rating: |  Accident investigation report completed and information captured |
A PIPER PA 24 IMPACTED THE TERRAIN DURING A FORCED LANDING, AFTER A TOTAL ENGINE FAILURE ON CLIMBOUT. INVESTIGATION REVEALED THAT THE ACCESSARY DRIVE GEAR WAS LOOSE ON THE END OF THE CRANKSHAFT, AND WAS THEREFORE NOT DRIVING THE ACCESSARY SECTION. THE AIRCRAFT HAD EXPERIENCED A PROPELLER STRIKE AT AN EARLIER DATE, AND THE INSTRUCTIONS IN THE TEXTRON LYCOMING SERVICE BULLETIN WERE NOT FOLLOWED WHEN THE REPAIRS WERE PERFORMED. THE BULLETIN CALLED FOR A NEW STYLE DRIVE GEAR AND GEAR RETAINING BOLT, BUT THE OLD STYLE PARTS WERE INSTALLED INSTEAD. ACCORDING TO LYCOMING, THE NEW PARTS MUST BE USED IN ORDER TO INSURE THAT THE GEAR SEATS ON THE CRANKSHAFT MOUNTING FACE, AND DOES NOT WORK LOOSE DURING ENGINE OPERATION.
Probable Cause: THE SLIPPAGE OF THE ACCESSARY DRIVE GEAR DUE TO IMPROPER MAINTENANCE BY OTHER MAINTENANCE PERSONNEL. FACTORS INCLUDE A FORCED LANDING IN UNSUITABLE TERRAIN.
Accident investigation:
 |
|
Sources:
NTSB SEA92LA007
Location
Revision history:
| Date/time | Contributor | Updates |
|---|---|---|
| 19-Mar-2024 14:21 | ASN Update Bot | Added |
Corrections or additions? ... Edit this accident description
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