ASN Wikibase Occurrence # 358411
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| Date: | Friday 18 August 1995 |
| Time: | 15:35 LT |
| Type: |  Beechcraft P-35 |
| Owner/operator: | Private |
| Registration: | N9531Y |
| MSN: | D7020 |
| Total airframe hrs: | 4610 hours |
| Engine model: | CONTINENTAL IO-470-LCN |
| Fatalities: | Fatalities: 0 / Occupants: 1 |
| Aircraft damage: | Substantial |
| Category: | Accident |
| Location: | Bend, OR -
 United States of America
|
| Phase: | En route |
| Nature: | Executive |
| Departure airport: | North Bend, OR (KOTH) |
| Alfalfa, OR (50OR) | |
| Investigating agency: | NTSB |
| Confidence Rating: |  Accident investigation report completed and information captured |
While in cruise flight, the pilot noticed a loss of oil pressure which was followed by a total loss of engine power. He elected to ditch the airplane in a lake as no other suitable forced landing site was available. An examination of the engine revealed the that the #4 connecting rod had separated from the crankshaft at the end cap. The rod end cap bolts had separated from the cap, and exhibited evidence of necking and heat distress. The #4 rod journal also exhibited evidence of heat distress. The bearings associated with the #4 rod journal were destroyed. All other rod journals and all of the main bearing journals did not exhibit evidence of heat distress or lack of lubrication.
Probable Cause: seizure of the #4 connecting rod bearing due to overtemperature resulting in the separation of the connecting rod and total loss of engine power. A factor contributing to the accident was the lack of suitable terrain for a forced landing.
Accident investigation:
 |
|
Sources:
NTSB SEA95LA186
Revision history:
| Date/time | Contributor | Updates |
|---|---|---|
| 14-Mar-2024 13:11 | ASN Update Bot | Added |
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