ASN Wikibase Occurrence # 383859
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| Date: | Friday 16 July 1982 |
| Time: | 22:30 LT |
| Type: |  Piper PA-22 |
| Owner/operator: | Paul Moore & Dave Armstrong |
| Registration: | N891A |
| MSN: | 22-192 |
| Year of manufacture: | 1951 |
| Total airframe hrs: | 3684 hours |
| Engine model: | Lycoming O-290-D |
| Fatalities: | Fatalities: 0 / Occupants: 3 |
| Aircraft damage: | Substantial |
| Category: | Accident |
| Location: | 65 Mi.ene Of Mc, AK -
 United States of America
|
| Phase: | En route |
| Nature: | Private |
| Departure airport: | Willow, AK (Z22) |
| Nikoli, AK (5N1) | |
| Investigating agency: | NTSB |
| Confidence Rating: |  Accident investigation report completed and information captured |
DURING FLIGHT, THE PILOT NOTICED A PROGRESSIVE LOSS OF POWER. HE ELECTED TO MAKE AN EMERGENCY LANDING ON A GRAVEL BAR. DURING THE LANDING, THE AIRCRAFT ROLLED THROUGH A SHALLOW SLOUGH WHERE THE LEFT MAIN GEAR HIT A LOG. THE NOSE GEAR THEN HIT A BANK AT THE EDGE OF THE SLOUGH AND THE PLANE WENT OVER ON ITS BACK. THE ENGINE DIED WHEN THE AIRCRAFT TURNED OVER. AN EXAMINATION OF THE ENGINE REVEALED THAT THE NO 3 ROCKER ARM EXHAUST VALVE ADJUSTMENT BOLT HAD FAILED AND WAS LOOSE IN THE VALVE COVER.THERE WAS EVIDENCE THAT THE BOLT MAY HAVE BEEN OVERTORQUED. THE BOLT SHOULD HAVE BEEN TORQUED TO 450 INCH POUNDS. A CHECK OF THE OTHER BOLTS REVEALED TAHT THEIR TORQUE VALUES RANGED FROM 150 TO 450 INCH POUNDS. THE ENGINE HAD A TOTAL OF 3.7 HOURS OF OPERATION SINCE IT HAD A TOP OVERHAUL.
Probable Cause:
Accident investigation:
 |
|
Sources:
NTSB ANC82DA060
Revision history:
| Date/time | Contributor | Updates |
|---|---|---|
| 03-Apr-2024 05:10 | ASN Update Bot | Added |
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