ASN Wikibase Occurrence # 133174
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| Date: | Friday 5 May 1995 |
| Time: | 23:15 LT |
| Type: |  Piper PA-23-160 Apache |
| Owner/operator: | Spirit Aviation, Inc. |
| Registration: | N4300Y |
| MSN: | 23-2033 |
| Total airframe hrs: | 6970 hours |
| Engine model: | Lycoming O-320-B3B |
| Fatalities: | Fatalities: 0 / Occupants: 2 |
| Aircraft damage: | Destroyed |
| Category: | Accident |
| Location: | Dayton, TN -
 United States of America
|
| Phase: | En route |
| Nature: | Private |
| Departure airport: | Louisville, KY (KLOU) |
| Chamblee, GA (KPDK) | |
| Investigating agency: | NTSB |
| Confidence Rating: |  Accident investigation report completed and information captured |
THE PILOT REPORTED THAT HE WAS IN CRUISE FLIGHT WHEN THE LEFT ENGINE BEGAN TO LOSE OIL PRESSURE. HE WAS GIVEN VECTORS TO THE NEAREST AIRPORT. THE LEFT ENGINE WAS RUNNING INCREASINGLY ROUGH, THEREFORE, THE PILOT SHUT THE ENGINE DOWN WHILE ON FINAL FOR RUNWAY 3. THE PILOT REALIZED THAT HE WOULD NEED TO MANUALLY EXTEND THE LANDING GEAR, HOWEVER, HE DID NOT HAVE ENOUGH TIME TO DO SO, AND ATTEMPTED A GO-AROUND. THE AIRCRAFT COLLIDED WITH THE TERRAIN PAST THE RUNWAY. AN INSPECTION OF THE ENGINE REVEALED THAT THE ENGINE LOST OIL BECAUSE THE CRANKSHAFT OIL SEAL HAD COME OUT OF THE CRANKCASE BORE, AND HAD MOVED FORWARD ON THE CRANKSHAFT. INSPECTION OF THE OIL SEAL REVEALED THAT IT WAS A 'LIPPED' SEAL WHICH WAS NOT AN APPROVED SEAL FOR THIS CRANKCASE.
Probable Cause: INSTALLATION OF AN IMPROPER CRANKSHAFT OIL SEAL WHICH EVENTUALLY SEPARATED FROM ITS SEAT RESULTING IN EXCESSIVE OIL LOSS, AND THE PILOT'S IMPROPER INFLIGHT PLANNING IN THAT HE DID NOT ALLOW SUFFICIENT TIME TO LOWER THE LANDING GEAR.
Accident investigation:
 |
|
Sources:
NTSB ATL95LA094
Location
Revision history:
| Date/time | Contributor | Updates |
|---|---|---|
| 21-Dec-2016 19:25 | ASN Update Bot | Updated [Time, Damage, Category, Investigating agency] |
| 29-Oct-2019 18:45 | Uli Elch | Updated [Aircraft type, Narrative] |
| 09-Apr-2024 15:24 | ASN Update Bot | Updated [Time, Other fatalities, Phase, Departure airport, Destination airport, Source, Narrative, Category, Accident report] |
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