ASN Wikibase Occurrence # 385347
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| Date: | Thursday 12 October 2000 |
| Time: | 18:30 LT |
| Type: |  Bellanca 17-30 |
| Owner/operator: | Dempsey Gearen |
| Registration: | N4882V |
| MSN: | 30124 |
| Total airframe hrs: | 2359 hours |
| Engine model: | Continental IO-520-D |
| Fatalities: | Fatalities: 0 / Occupants: 2 |
| Aircraft damage: | Substantial |
| Category: | Accident |
| Location: | Waller, TX -
 United States of America
|
| Phase: | En route |
| Nature: | Private |
| Departure airport: | (3X57) |
| Investigating agency: | NTSB |
| Confidence Rating: |  Accident investigation report completed and information captured |
During climb to cruise, approximately 1,100 feet agl, the pilot heard a 'loud sound' from the engine, followed by a 'hard vibration.' The pilot turned toward the airport and then the engine lost power. The pilot initiated a forced landing to a field near the airport. The airplane struck a tree and impacted terrain. A teardown examination of the engine revealed that the crankshaft was fractured at the lead bushing hole in the number 2 cheek counterweight housing. The crankshaft 'bump' surface at the fractured leading end exhibited polishing from the counterweight hitting the surface. The polishing could only occur if the rear pin had escaped and the counterweight stood up, hitting the camshaft and crankcase as it trailed through the engine. The counterweight housing had fractured due to overload.
Probable Cause: the loss of engine power during climb to cruise due to the failure of the crankshaft counterweight. A contributing factor was the lack of suitable terrain for the forced landing.
Accident investigation:
 |
|
Sources:
NTSB FTW01LA009
Revision history:
| Date/time | Contributor | Updates |
|---|---|---|
| 04-Apr-2024 17:34 | ASN Update Bot | Added |
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