ASN Wikibase Occurrence # 217597
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| Date: | Friday 9 June 2017 |
| Time: | 15:05 |
| Type: |  Piper PA-32R-301T |
| Owner/operator: | Private |
| Registration: | N782SW |
| MSN: | 32R-8429001 |
| Year of manufacture: | 1983 |
| Total airframe hrs: | 6016 hours |
| Engine model: | Lycoming TIO-540-S1AD |
| Fatalities: | Fatalities: 0 / Occupants: 2 |
| Aircraft damage: | Substantial |
| Category: | Accident |
| Location: | Dalhart, TX -
 United States of America
|
| Phase: | En route |
| Nature: | Private |
| Departure airport: | Dalhart, TX (DHT) |
| Angel Fire, NM (AXX) | |
| Investigating agency: | NTSB |
| Confidence Rating: |  Accident investigation report completed and information captured |
The airplane was in cruise flight when the engine’s forward main seal (crankshaft seal) began to leak engine oil. Shortly thereafter, the engine lost power, and the pilot subsequently performed a forced landing to a field about 5 miles west of the departure airport.
Postaccident examination of the engine revealed that the bottom half of the crankshaft seal had slipped forward from its placement, which allowed engine oil to leak from the engine. The seal had an approximate time in service of 21 hours since its replacement. It is likely that maintenance personne installed an improperly sized crankshaft seal, which led to it slipping, allowing the engine oil to leak.
Probable Cause: The failure of the engine's front bearing seal due to maintenance personnel’s installation of an improperly sized crankshaft seal, which resulted in oil starvation and a forced landing.
Accident investigation:
 |
|
Sources:
NTSB
Location
Revision history:
| Date/time | Contributor | Updates |
|---|---|---|
| 11-Nov-2018 08:33 | ASN Update Bot | Added |
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