What happened
An instructor and a student were conducting training maneuvers when the aircraft experienced an unexpected loss of engine power. The pilot attempted to execute a forced landing but was unable to maintain altitude. The airplane subsequently collided with trees during the descent.
The investigation
Following the accident, the Federal Aviation Administration examined the engine to determine the cause of the failure. Inspectors discovered that a piece of rubber seal from the landing light had broken loose and become lodged in the carburetor. This obstruction prevented proper fuel flow, leading to the loss of power.
Findings
The investigation revealed that the rubber seal had been replaced by an individual employed by the flight school who was not qualified to perform such maintenance tasks. The improper installation or use of non-standard parts contributed directly to the mechanical failure. Engine failure due to foreign object ingestion was identified as the primary cause of the accident.
Safety message
This incident highlights the critical importance of using qualified personnel for all aircraft maintenance and repair tasks. Only certified mechanics should perform modifications or replacements of aircraft components to ensure airworthiness and safety.