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Local Training Flight Ends in Crash After Descending Spiral (N5932L)

Vestal, NY, US

On June 29, 1993, an American General Aircraft AA-1 (registration N5932L) was involved in an aviation accident near Vestal, NY. Investigators recorded the probable cause as: 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. This summary draws on records from the U.S. National Transportation Safety Board (NTSB) historical archive.

Sourcesthe U.S. National Transportation Safety Board (NTSB) historical archivePrimary reportUpdated 2026-09-03Data APIEditorial standards

A student pilot and flight instructor crashed during a local training flight after the aircraft entered a descending spiral. Post-accident findings indicated the student had performed engine maintenance, including piston and ring changes, and used tape on the air induction system

Incident Overview A student pilot and a flight instructor departed on a local training flight. Approximately ten minutes after takeoff, a witness observed the aircraft in a descending spiral with the engine running over an area used for practicing forced landings. The aircraft was seen leveling off as it passed behind a hilltop before impacting the ground. Another witness reported hearing engine backfiring followed by the sound of the impact. ## Maintenance Findings The post-accident investigation revealed that the student pilot, who also owned the aircraft, had been performing maintenance on the engine. This work included changing the engine pistons and rings. Investigators observed numerous fuel stains over several components of the engine. The carburetor mixture screw was found set to the maximum lean condition. Additionally, duct tape and electrical tape had been used extensively for repairs on the air induction system.

Fuel exhaustion & starvationMaintenance errorAerodynamic stall

Frequently asked questions

What happened in the 29 Jun 1993 American General Aircraft AA-1 accident near Vestal, NY?

A student pilot and flight instructor crashed during a local training flight after the aircraft entered a descending spiral. Post-accident findings indicated the student had performed engine maintenance, including piston and ring changes, and used tape on the air induction system

What aircraft was involved and where did it happen?

The accident on 29 Jun 1993 involved an American General Aircraft AA-1, registration N5932L, at Vestal, NY.

What was the probable cause of the accident?

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.

More accident analyses

Investigation report by the U.S. National Transportation Safety Board (NTSB) historical archive. Original record: https://carol.ntsb.gov/event/20001211X12682. This page is a structured re-presentation; facts and quotes are in the National Transportation Safety Board (NTSB), United States.