ASN Wikibase Occurrence # 384441
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| Date: | Sunday 9 May 1982 |
| Time: | 12:21 LT |
| Type: |  Beechcraft 35-B33 |
| Owner/operator: | Private |
| Registration: | N969H |
| MSN: | CD 485 |
| Total airframe hrs: | 1991 hours |
| Engine model: | Continental IO-470-K |
| Fatalities: | Fatalities: 0 / Occupants: 5 |
| Aircraft damage: | Substantial |
| Category: | Accident |
| Location: | Herndon, VA -
 United States of America
|
| Phase: | En route |
| Nature: | Private |
| Departure airport: | Gaithersburg, MD (GAI |
| Gaithersburg, MD (GAI | |
| Investigating agency: | NTSB |
| Confidence Rating: |  Accident investigation report completed and information captured |
FOLLOWING AN ENGINE FAILURE, THE PILOT HAD A LIMITED CHOICE OF TERRAIN FOR LANDING. HE LANDED HARD AND SLID INTO TREES. A METALLURGICAL EXAMINATION REVEALED THAT THE SHAFT ON THE ENGINE OIL PUMP DRIVE GEAR, PN 538609, HAD FAILED FROM FATIGUE. EVIDENCE OF HEAVY WEAR OF THE SHAFT WAS FOUND WHICH COINCIDED WITH A FOREIGN METALLIC SMEAR (ALUMINUM) ON THE SURFACE OF THE OIL REVEALED NO CONTAMINATION. AN EXAMINATION OF THE ENGINE LOG REVEALED THAT THE ENGINE HAD RECEIVED MAJOR REPAIR ON SEVERAL OCCASIONS, ONCE FOR A BROKEN PISTON.
Probable Cause:
Accident investigation:
 |
|
Sources:
NTSB ATL82DA127
Revision history:
| Date/time | Contributor | Updates |
|---|---|---|
| 03-Apr-2024 11:14 | ASN Update Bot | Added |
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