ASN Wikibase Occurrence # 201940
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| Date: | Sunday 21 February 1999 |
| Time: | 12:58 LT |
| Type: |  Stinson 108-3 |
| Owner/operator: | William J. Linn |
| Registration: | N6191M |
| MSN: | 108-4191 |
| Total airframe hrs: | 2593 hours |
| Engine model: | Franklin 6A4-165-B3 |
| Fatalities: | Fatalities: 0 / Occupants: 1 |
| Aircraft damage: | Substantial |
| Category: | Accident |
| Location: | Bristol, CT -
 United States of America
|
| Phase: | En route |
| Nature: | Private |
| Departure airport: | East Windsor, CT (7B6 |
| Danbury, CT (KDXR) | |
| Investigating agency: | NTSB |
| Confidence Rating: |  Accident investigation report completed and information captured |
The pilot stated that he heard a loud noise accompanied by a loss of engine power. A forced landing was executed to a field. Inspection of the engine after the accident revealed two holes in the top of the engine crankcase. The number 3 piston, and it's connecting rod and bolts, were removed from the engine and examined. One of the connecting rod bolts contained microfissures typical of fatigue cracking on the head portion of the bolt. The fatigue cracking had initiated from multiple locations on one side of the underhead radius, and had propagated nearly all of the way through the cross section of the bolt before final separation. A review of the Airplane Engine logbooks revealed that the last Major overhaul was conducted on March 3, 1965.
Probable Cause: The partial loss of power due to the failure of a fatigued connecting rod bolt.
Accident investigation:
 |
|
Sources:
NTSB NYC99LA065
Revision history:
| Date/time | Contributor | Updates |
|---|---|---|
| 26-Nov-2017 09:59 | ASN Update Bot | Added |
| 08-Apr-2024 09:26 | ASN Update Bot | Updated [Time, Operator, Other fatalities, Phase, Departure airport, Destination airport, Source, Narrative, Accident report] |
Corrections or additions? ... Edit this accident description
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