ASN Wikibase Occurrence # 366459
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| Date: | Wednesday 1 August 1990 |
| Time: | 17:00 LT |
| Type: |  Cessna 152 |
| Owner/operator: | Tillman, Michael |
| Registration: | N64984 |
| MSN: | 15281511 |
| Year of manufacture: | 1978 |
| Total airframe hrs: | 4900 hours |
| Engine model: | LYCOMING O-235-L2C |
| Fatalities: | Fatalities: 0 / Occupants: 2 |
| Aircraft damage: | Substantial |
| Category: | Accident |
| Location: | New Roades, LA -
 United States of America
|
| Phase: | Manoeuvring (airshow, firefighting, ag.ops.) |
| Nature: | Training |
| Departure airport: | Baton Rouge, LA (BTR |
| Investigating agency: | NTSB |
| Confidence Rating: |  Accident investigation report completed and information captured |
DURING THE INSTRUCTIONAL FLIGHT, THE ENGINE SUFFERED A SUDDEN LOSS OF OIL PRESSURE, AND DURING THE FORCED LANDING, THE AIRPLANE NOSED OVER TO THE INVERTED POSITION. AS THE OIL PRESSURE WAS DROPPING, SO WAS THE ENGINE RPM. THERE WAS VERY LITTLE OIL IN THE SYSTEM AFTER THE ACCIDENT AND THE OIL HAD BEEN BLOWING OUT THE ENGINE BREATHER SYSTEM. THE OPERATOR SAID THAT AFTER THE WRECKAGE HAD BEEN RECOVERED, THEY HAD BLOCKED OFF THE ENGINE BREATHER SYSTEM AND THEN HAD PRESSURIZED IT TO 15 PSI, BUT COULD NOT FIND ANYTHING MECHANICAL THAT MIGHT HAVE PRESSURIZED THE CRANKCASE IN FLIGHT.
Probable Cause: UNKNOWN MECHANICAL MALFUNCTION RESULTING IN ENGINE OIL STARVATION. A CONTRIBUTING FACTOR WAS ROUGH TERRAIN IN WHICH THE FORCED LANDING WAS MADE.
Accident investigation:
 |
|
Sources:
NTSB FTW90LA150
Location
Revision history:
| Date/time | Contributor | Updates |
|---|---|---|
| 21-Mar-2024 05:41 | ASN Update Bot | Added |
Corrections or additions? ... Edit this accident description
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