ASN Wikibase Occurrence # 370563
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| Date: | Thursday 1 June 2000 |
| Time: | 14:30 LT |
| Type: |  Piper PA-31-350 |
| Owner/operator: | Frontier Flying Service, Inc |
| Registration: | N3536B |
| MSN: | 75952205 |
| Total airframe hrs: | 19019 hours |
| Engine model: | Lycoming TIO-540-J2BD |
| Fatalities: | Fatalities: 0 / Occupants: 5 |
| Aircraft damage: | Minor |
| Category: | Serious incident |
| Location: | TANANA, AK -
 United States of America
|
| Phase: | En route |
| Nature: | Unknown |
| Departure airport: | TANANA, AK (TAL) |
| FAIRBANKS, AK (FAI) | |
| Investigating agency: | NTSB |
| Confidence Rating: |  Accident investigation report completed and information captured |
A passenger aboard a twin-engine, scheduled commuter airplane reported to the pilot that there was black smoke, fire, and oil coming from the left engine. The pilot shut down the left engine, made a 180-degree turn to return the departure airport, and alerted emergency fire crews to standby for his return. On arrival, fire department personnel extinguished the fire. The airplane was equipped with two TEXTRON Lycoming TIO-540-J2BD engines. A postincident inspection revealed the oil filter adapter plate gasket material displayed obvious signs of degradation and deformation. A subsequent investigation revealed that the manufacturer that supplied TEXTRON Lycoming with the oil filter adapter plate gaskets, recently changed material suppliers. The new gasket material did not meet the existing specifications, and deteriorated when in contact with hot engine oil. A subsequent oil leak sprayed engine oil within the engine cowling, near the rear of the engine, adjacent to the engine turbocharger.
Probable Cause: An in-flight oil leak due to the deterioration of oil filter adapter plate gasket material, and the supplier's distribution of inadequate material. A factor associated with the accident was the engine manufacturer's inadequate quality control.
Accident investigation:
 |
|
Sources:
NTSB ANC00IA063
Location
Revision history:
| Date/time | Contributor | Updates |
|---|---|---|
| 25-Mar-2024 12:04 | ASN Update Bot | Added |
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