ASN Wikibase Occurrence # 43149
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| Date: | Tuesday 29 June 1993 |
| Time: | 15:25 LT |
| Type: |  American Aviation AA-1 Yankee |
| Owner/operator: | David W. Ford |
| Registration: | N5932L |
| MSN: | 0232 |
| Year of manufacture: | 1969 |
| Total airframe hrs: | 1718 hours |
| Engine model: | Lycoming O-235-C2C |
| Fatalities: | Fatalities: 2 / Occupants: 2 |
| Aircraft damage: | Destroyed |
| Category: | Accident |
| Location: | Vestal, NY -
 United States of America
|
| Phase: | Manoeuvring (airshow, firefighting, ag.ops.) |
| Nature: | Private |
| Departure airport: | Endicott, NY (N17) |
| Investigating agency: | NTSB |
| Confidence Rating: |  Accident investigation report completed and information captured |
THE FLIGHT INSTRUCTOR AND STUDENT PILOT DEPARTED ON A LOCAL TRAINING FLIGHT. TEN MINUTES AFTER DEPARTURE, THE AIRPLANE WAS OBSERVED IN A DESCENDING SPIRAL, WITH THE ENGINE RUNNING, OVER AN AREA WHERE FORCED LANDINGS WERE PRACTICED. A WITNESS OBSERVED THE AIRPLANE LEVELING OFF AS IT WENT BEHIND A HILL TOP, THEN HEARD THE AIRPLANE IMPACT THE GROUND. ANOTHER WITNESS HEARD THE ENGINE BACKFIRING, FOLLOWED BY THE SOUND OF IMPACT. POST ACCIDENT INVESTIGATION REVEALED THE STUDENT PILOT/OWNER OF THE AIRPLANE WAS PERFORMING HIS OWN MAINTENANCE. THIS INCLUDED CHANGING ENGINE PISTONS AND RINGS. NUMEROUS FUEL STAINS WERE OBSERVED OVER SEVERAL COMPONENTS OF THE ENGINE. THE CARBURETOR MIXTURE SCREW WAS SET TO THE MAXIMUM LEAN CONDITION. DUCT TAPE AND ELECTRICAL TAPE HAD BEEN USED EXTENSIVELY FOR REPAIRS ON THE AIR INDUCTION SYSTEM.
Probable Cause: THE LOSS OF ENGINE POWER DUE TO FUEL STARVATION FROM A FUEL LEAK CAUSED BY INADEQUATE MAINTENANCE BY UNQUALIFIED PERSONNEL, THE PILOT'S FAILURE TO MAINTAIN ADEQUATE AIRSPEED, WHICH RESULTED IN AN INADVERTENT STALL AND COLLISION WITH THE GROUND.
Accident investigation:
 |
|
Sources:
NTSB NYC93FA133
Location
Revision history:
| Date/time | Contributor | Updates |
|---|---|---|
| 24-Oct-2008 10:30 | ASN archive | Added |
| 21-Dec-2016 19:24 | ASN Update Bot | Updated [Time, Damage, Category, Investigating agency] |
| 10-Apr-2024 13:01 | ASN Update Bot | Updated [Time, Cn, Operator, Other fatalities, Source, Narrative, Category, Accident report] |
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