ASN Wikibase Occurrence # 367286
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| Date: | Saturday 17 March 1990 |
| Time: | 16:11 LT |
| Type: |  Cessna 172G |
| Owner/operator: | Bs Aviation, Inc. |
| Registration: | N4696L |
| MSN: | 17254691 |
| Year of manufacture: | 1966 |
| Total airframe hrs: | 3844 hours |
| Engine model: | LYCOMING IO-360-A1D |
| Fatalities: | Fatalities: 0 / Occupants: 3 |
| Aircraft damage: | Substantial |
| Category: | Accident |
| Location: | Rio Hondo, TX -
 United States of America
|
| Phase: | En route |
| Nature: | Private |
| Departure airport: | Harlingen, TX (KHRL) |
| Harlingen, TX (KHRL) | |
| Investigating agency: | NTSB |
| Confidence Rating: |  Accident investigation report completed and information captured |
THE PILOT STATED THAT WHILE IN CRUISE FLIGHT AT 2,500 FEET, HE NOTICED AN INCREASE IN ENGINE RPM AND DETECTED SMOKE IN THE CABIN. AFTER REDUCING THROTTLE TO A CONTROLLABLE RPM, HE NOTICED THAT THE ENGINE OIL PRESSURE WAS ZERO. HE SUBSEQUENTLY EXECUTED A FORCED LANDING TO AN OPEN BRUSHY AREA THAT WAS THE BEST AVAILABLE. DURING ROLL OUT THE NOSE GEAR DUG INTO THE SOFT GROUND AND THE AIRPLANE FLIPPED OVER. INVESTIGATION REVEALED THAT THE PROPELLER GOVERNOR OIL LINE FITTING HAD SEPARATED DUE TO STRIPPING OF THE THREADS OUT OF THE GOVERNOR HOUSING AND THAT THE FITTING WAS INCORRECT FOR THE APPLICATION. THE AIRPLANE HAD EXPERIENCED A FORCED LANDING 13 DAYS PRIOR TO THE ACCIDENT DUE TO AN OIL LEAK AND LOSS OF OIL PRESSURE DUE TO THE JAM NUT ON THE FAILED FITTING HAVING BACKED OFF. ON THAT OCCASION, A MECHANIC TIGHTENED THE LINE AND THE AIRPLANE WAS CLEARED FOR FLIGHT.
Probable Cause: OIL STARVATION INDUCED POWER LOSS DUE TO IMPROPER MAINTENANCE PROCEDURES. CONTRIBUTING TO THE ACCIDENT WERE INADEQUATE MAINTENANCE INSPECTION AND THE SOFT TERRAIN IN WHICH THE FORCED LANDING WAS PERFORMED.
Accident investigation:
 |
|
Sources:
NTSB FTW90LA084
Location
Revision history:
| Date/time | Contributor | Updates |
|---|---|---|
| 22-Mar-2024 12:44 | ASN Update Bot | Added |
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