ASN Wikibase Occurrence # 362493
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| Date: | Tuesday 19 January 1993 |
| Time: | 19:10 LT |
| Type: |  Boeing-Stearman A75N1 |
| Owner/operator: | Private |
| Registration: | N56924 |
| MSN: | 75-2480 |
| Total airframe hrs: | 6601 hours |
| Engine model: | P&W R-985-AN1 |
| Fatalities: | Fatalities: 0 / Occupants: 1 |
| Aircraft damage: | Substantial |
| Category: | Accident |
| Location: | Medicine Bow, WY -
 United States of America
|
| Phase: | En route |
| Nature: | Private |
| Departure airport: | Rock Springs, WY (RKS |
| Laramie, WY (KLAR) | |
| Investigating agency: | NTSB |
| Confidence Rating: |  Accident investigation report completed and information captured |
THE PILOT REPORTED THAT SHORTLY AFTER LEVELLING OFF AT 14,000 FEET MSL, THE ENGINE SURGED THREE TIMES AND THEN STOPPED. A FORCED LANDING WAS EXECUTED ONTO ROCKY, UPSLOPING TERRAIN, UNDER DARK NIGHT CONDITIONS. SUBSEQUENT DISASSEMBLY OF THE ENGINE REVEALED THAT THE NUMBER 7 CYLINDER INTAKE VALVE ROCKER ARM HAD FAILED.
Probable Cause: FAILURE OF THE #7 CYLINDER ROCKER ARM. FACTORS CONTRIBUTING TO THE ACCIDENT WERE UNSUITABLE TERRAIN AND DARK NIGHT CONDITIONS.
Accident investigation:
 |
|
Sources:
NTSB SEA93LA055
Location
Revision history:
| Date/time | Contributor | Updates |
|---|---|---|
| 18-Mar-2024 07:05 | ASN Update Bot | Added |
Corrections or additions? ... Edit this accident description
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