79 fatalities

Controlled Flight into Terrain During Approach to Nha Trang Air Base (55-4574)

Nha Trang, VietnamLanding (descent or approach)

On November 27, 1970, a Fairchild C-123 Provider (registration 55-4574) operated by United States Air Force - USAF (since 1947) was involved in an aviation accident near Nha Trang, Vietnam during landing or approach. 79 people were killed. Investigators recorded the probable cause as: Controlled flight into terrain. 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

A military flight from Saigon crashed into a mountain 25 km southwest of Nha Trang Air Base after the crew failed to maintain altitude, striking trees. All 79 occupants were killed. The wreckage was located nine days later.

Incident

On a flight from Saigon to Nha Trang Air Base, the aircraft was descending through poor weather conditions. The ceiling was broken at 2,000 feet with horizontal visibility estimated at 1,500 metres. While on approach at an altitude of 4,600 feet, the crew failed to realize the aircraft's altitude was too low. The right wing struck trees, leading to a loss of control. The airplane subsequently crashed in flames on the slope of a mountain in a wooded area, approximately 25 km southwest of the airport.

Wreckage and Recovery

Due to the poor weather and the inaccessible terrain, the crash site was not reached until nine days after the accident. The wreckage was found about 150 feet below the summit of the mountain. All 79 occupants on board were killed in the crash. The crew members were identified as Maj Robert Lee Baker, 1st Lt Marvin S. Arthington, 1st Lt Frederick M. Rader, T/Sgt William Brandon O'Kieff, Sgt Allen James Bodin, and A1c Frederick Richard Neff.

Probable Cause

The official findings determined the probable cause of the accident to be controlled flight into terrain.