4 fatalities

Night Training Flight Crash Off Valdez Airport (56-4388)

Valdez, United States of AmericaTakeoff (climb)

On April 25, 1964, a Fairchild C-123 Provider (registration 56-4388) operated by Air National Guard was involved in an aviation accident near Valdez, United States of America during takeoff. 4 people were killed. Investigators recorded the probable cause as: The assumption that the pilot-in-command suffered a spatial disorientation is not ruled out. Also, icing may have been a likely cause of failure to gain altitude. There were no deicing procedures at the time. This summary draws on records from the Bureau of Aircraft Accidents Archives (B3A); 6 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

A four-crew aircraft crashed into the sea 1.5 km offshore from Valdez Airport during a night training flight in heavy snow. All four Air National Guard crew members were killed.

Incident Overview and Context A four-crew aircraft crashed into the sea approximately 1.5 km offshore from Valdez Airport shortly after takeoff. The flight was a local training mission conducted on behalf of the Air National Guard. The incident occurred at night under conditions of heavy snowfall. All four crew members aboard the aircraft were killed in the crash. The source does not specify the aircraft type, registration, exact date, or operator beyond the Air National Guard affiliation. ## Flight Sequence and Environmental Conditions The aircraft entered a nose-down attitude during its initial climb after takeoff. The crash occurred in the sea about 1.5 km from the airport. The environmental conditions at the time included nighttime operations and heavy snowfall. The source does not provide details on the specific flight path, altitude at the time of the incident, or the exact sequence of events leading to the nose-down attitude. ## Official Findings and Contributing Factors The official investigation did not rule out the possibility that the pilot-in-command suffered from spatial disorientation. Icing was identified as a likely contributing factor to the aircraft's failure to gain altitude. At the time of the incident, no deicing procedures were in place. The investigation concluded that both icing and spatial disorientation likely contributed to the crash. The source does not provide additional details on the specific mechanisms of failure or the exact sequence of events leading to the crash.

Probable cause

The assumption that the pilot-in-command suffered a spatial disorientation is not ruled out. Also, icing may have been a likely cause of failure to gain altitude. There were no deicing procedures at the time. It's likely both icing and spatial disorientation contributed to the crash.