3 fatalities

Engine Fire and Wing Separation Lead to Fatal Crash Near Kenai Airport (N3373F)

Kenai, United States of AmericaLanding (descent or approach)

On July 14, 1981, a Douglas C-54 Skymaster (registration N3373F) operated by Aero Union was involved in an aviation accident near Kenai, United States of America during landing or approach. 3 people were killed. Investigators recorded the probable cause as: Engine fire and explosion in flight due to engine structure: cylinder assembly material failure. Contributing factors: overload failure, fire in engine and wing, separation in flight, failure of cylinder n°2 in engine n°1. This summary draws on records from the Bureau of Aircraft Accidents Archives (B3A); 8 related events involving the same aircraft type or operator are linked below.

Sourcesthe Bureau of Aircraft Accidents Archives (B3A)Primary reportUpdated 2026-06-12Data APIEditorial standards

After takeoff, engine No. 1 caught fire and exploded. During emergency return, a portion of the left wing detached. The aircraft crashed in a pasture, killing all three occupants.

Incident

Shortly after departure from Kenai Airport, while climbing through an altitude of 2,000 feet, the number one engine experienced a fire and subsequently exploded. The crew declared an emergency and initiated a return to Kenai. During the return, a section of the left wing separated from the aircraft. The airplane became uncontrollable and crashed into a pasture. Impact forces and a post-crash fire destroyed the aircraft.

Occupants

All three individuals on board were killed in the accident.

Probable Cause

The official investigation determined the probable cause as an engine fire and explosion in flight resulting from a failure in the engine structure, specifically a cylinder assembly material failure. Contributing factors included an overload failure, fire in the engine and wing, in-flight separation, and failure of cylinder number two in engine number one.