ASN Wikibase Occurrence # 374831
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| Date: | Friday 20 June 1986 |
| Time: | 19:30 LT |
| Type: |  Piper L-4H |
| Owner/operator: | Bob Olmstead |
| Registration: | N58988 |
| MSN: | 12097 |
| Total airframe hrs: | 1900 hours |
| Engine model: | CONTINENTAL C90-8F |
| Fatalities: | Fatalities: 0 / Occupants: 1 |
| Aircraft damage: | Substantial |
| Category: | Accident |
| Location: | Anchorage, AK -
 United States of America
|
| Phase: | Landing |
| Nature: | Private |
| Departure airport: | Moose Point, AK |
| Anchorage, AK (Z41) | |
| Investigating agency: | NTSB |
| Confidence Rating: |  Accident investigation report completed and information captured |
THE PILOT/MECHANIC STATED THE ENGINE OIL PRESSURE GAUGE BEGAN FLICKERING, SO HE ELECTED TO LAND AND DURING THE DESCENT THE ENGINE FAILED. HE LANDED DOWNWIND IN 20 KNOT WINDS AND DURING THE LANDING ROLL, ACROSS TUNDRA/MUD THE AIRPLANE'S WHEELS STRUCK A LARGE WATER FILLED HOLE AND NOSED OVER. POST ACC EXAM OF THE ACFT REVEALED THAT THE BOTTOM OF THE FUSELAGE WAS COVERED WITH OIL. THE OIL BREATHER TUBE HAD AN OIL CAN WIRED TO IT. THE PLT DID HIS OWN MAINTENANCE WORK. THE OIL WAS BEING BLOWN OUT THRU THE BREATHER TUBE. SINCE THE ACFT WAS UPSIDE DOWN ANY REMAINING OIL HAD DRAINED OUT. THE PLT WAS OPERATING THE ACFT KNOWING THAT THE LUBRICATING SYS WAS IMPROPER.
Probable Cause:
Accident investigation:
 |
|
Sources:
NTSB ANC86FA085
Location
Revision history:
| Date/time | Contributor | Updates |
|---|---|---|
| 28-Mar-2024 13:23 | ASN Update Bot | Added |
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