ASN Wikibase Occurrence # 360661
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| Date: | Monday 28 March 1994 |
| Time: | 16:20 LT |
| Type: |  Cessna 207 |
| Owner/operator: | Spernak Airways, Inc. |
| Registration: | N29cf |
| MSN: | |
| Total airframe hrs: | 13480 hours |
| Engine model: | CONTINENTAL IO-520 |
| Fatalities: | Fatalities: 0 / Occupants: 4 |
| Aircraft damage: | Minor |
| Category: | Serious incident |
| Location: | Anchorage, AK -
 United States of America
|
| Phase: | En route |
| Nature: | Unknown |
| Departure airport: | |
| Beluga, AK (BLG) | |
| Investigating agency: | NTSB |
| Confidence Rating: |  Accident investigation report completed and information captured |
WHILE IN CRUISE FLIGHT ENGINE SUDDENLY BEGAN TO RUN ROUGH AND LOOSE POWER. NO UNUSUAL NOISE WAS ASSOCIATED WITH THE ANOMALY. EXAMINATION OF THE ENGINE REVEALED DAMAGE TO THE UPPER SURFACE OF THE NO. 4 PISTON. THE DAMAGE TO THE PISTON WAS CONSISTENT WITH DETONATION AND SUBSEQUENT RING BREAKAGE.
Probable Cause: THE PARTIAL FAILURE OF THE NO. 4 PISTON FROM OVER TEMPERATURE (DETONATION).
Accident investigation:
 |
|
Sources:
NTSB ANC94IA049
Location
Revision history:
| Date/time | Contributor | Updates |
|---|---|---|
| 16-Mar-2024 09:47 | ASN Update Bot | Added |
Corrections or additions? ... Edit this accident description
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