ASN Wikibase Occurrence # 365710
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| Date: | Wednesday 6 February 1991 |
| Time: | 11:31 LT |
| Type: |  Cessna 150M |
| Owner/operator: | Action Aviation |
| Registration: | N9433U |
| MSN: | 1507838 |
| Total airframe hrs: | 3727 hours |
| Engine model: | CONTINENTAL O-200-A |
| Fatalities: | Fatalities: 0 / Occupants: 2 |
| Aircraft damage: | Substantial |
| Category: | Accident |
| Location: | Buckeye, AZ -
 United States of America
|
| Phase: | Manoeuvring (airshow, firefighting, ag.ops.) |
| Nature: | Training |
| Departure airport: | Glendale, AZ (KGEU) |
| Investigating agency: | NTSB |
| Confidence Rating: |  Accident investigation report completed and information captured |
THE CFI AND NONCERTIFICATED STUDENT PILOT DEPARTED GOODYEAR, AZ, ON A DUAL INSTRUCTIONAL FLIGHT. WHILE PRACTICING GROUND REFERENCE MANEUVERS THE AIRPLANE SUSTAINED A LOSS OF AILERON CONTROL. THE CFI EXECUTED A FORCED LANDING INTO A DRYWASH. THE AIRPLANE COLLIDED WITH A BERM DURING THE LANDING ROLL. THE WRECKAGE EXAMINATION DISCLOSED THAT ONE OF THE AILERON CABLES DISCONNECTED FROM THE BELLCRANK. THE CONNECTING NUT AND BOLT WAS NOT LOCATED. ANOTHER BOLT, ALTHOUGH ATTACHED TO THE BELLCRANK, DID NOT CONTAIN A CORRESPONDING NUT. BOTH WINGS WERE REINSTALLED ON THE AIRPLANE ABOUT 22 MONTHS BEFORE THE ACCIDENT. THE LAST ANNUAL INSPECTION WAS PERFORMED ABOUT 3 MONTHS BEFORE THE ACCIDENT. THE SAME MECHANIC PERFORMED THE REINSTALLATION OF BOTH WINGS AND THE LAST ANNUAL INSPECTION.
Probable Cause: THAT MAINTENANCE PERSONNEL FAILED TO PROPERLY INSTALL THE WINGS BY NOT RECONNECTING THE BOLTS AT THE BELLCRANK AND PERFORMED AN INADEQUATE ANNUAL INSPECTION.
Accident investigation:
 |
|
Sources:
NTSB LAX91LA092
Location
Revision history:
| Date/time | Contributor | Updates |
|---|---|---|
| 20-Mar-2024 13:00 | ASN Update Bot | Added |
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