2 fatalities

Midair Collision Between Cargo C-46 and Private Piper Aztec in Columbia City (N10415)

Columbia City, United States of AmericaFlight

On June 16, 1966, a Curtiss C-46 Commando (registration N10415) operated by Zantop Air Transport was involved in an aviation accident near Columbia City, United States of America in flight. 2 people were killed. Investigators recorded the probable cause as: In-flight collision caused by an inadequate visual contact to avoid collision on part of the crew. 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 report: the U.S. National Transportation Safety Board (NTSB) historical archive (1962-1981)Updated 2026-07-04Data APIEditorial standards

A cargo C-46 and a private Piper Aztec registered N5628Y collided midair over Columbia City, resulting in the crash of both aircraft and fatalities of all three pilots.

Accident Overview

On a cargo flight from Detroit to Kansas City, a C-46 aircraft collided midair with a private Piper Aztec registered N5628Y. Following the collision, both aircraft lost control, dove into the ground, and crashed in an open field located in Columbia City. All three pilots—both pilots aboard the C-46 and the pilot of the Piper Aztec—were killed.

Aircraft and Flight Details

The C-46 was conducting a cargo flight, while the Piper Aztec was operated as a private aircraft. The specific operators, flight numbers, and other identifying details were not disclosed in the official report. The collision occurred during daytime, though exact time and weather conditions were not specified.

Response and Investigation

Emergency responders arrived at the crash site in Columbia City. The National Transportation Safety Board (NTSB) investigated the accident. The official probable cause was determined.

Probable Cause

The official probable cause of the accident was an in-flight collision caused by inadequate visual contact to avoid collision on the part of the crew.