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AN-10 Prototype Crashes After Multiple Engine Failures During Test Flight (CCCP-L7256)

Voronezh, RussiaTakeoff (climb)

On April 29, 1958, an Antonov AN-10 (registration CCCP-L7256) operated by Antonov Industries was involved in an aviation accident near Voronezh, Russia during takeoff. One person was killed. Investigators recorded the probable cause as: Failure of the engine number one due to an overheating caused by an excessive use. This summary draws on records from the Bureau of Aircraft Accidents Archives (B3A); 1 related events involving the same aircraft type or operator are linked below.

Sourcesthe Bureau of Aircraft Accidents Archives (B3A)Source recordUpdated 2026-07-04Data APIEditorial standards

On a local test flight from Voronezh Airport, an AN-10 prototype experienced failure of engine number one, then engine number three. Attempting emergency landing, the aircraft struck a river bank and crashed, killing one crew member and injuring four others.

Accident Details

The accident occurred during a local test flight of an Antonov AN-10 prototype. Shortly after takeoff from Voronezh Airport, while climbing to an altitude of 500 meters, engine number one failed. To prevent asymmetric thrust, the crew immediately reduced the power of engine number four to 40% of its nominal value. Seconds later, engine number three also failed. The same procedure was applied to engine number two.

Emergency Landing and Crash

Unable to maintain a safe altitude, the captain decided to attempt an emergency landing. The aircraft subsequently struck the bank of a river and crashed.

Casualties and Injuries

The mechanic was killed. Four other crew members sustained injuries, two of them seriously.

Probable Cause

The official investigation determined that the accident was caused by the failure of engine number one due to an overheating caused by an excessive use.

Engine failure

Related events

Same operator

Frequently asked questions

What happened in the 29 Apr 1958 Antonov AN-10 accident near Voronezh, Russia?

On a local test flight from Voronezh Airport, an AN-10 prototype experienced failure of engine number one, then engine number three. Attempting emergency landing, the aircraft struck a river bank and crashed, killing one crew member and injuring four others.

Were there any fatalities in the 29 Apr 1958 Antonov AN-10 accident?

The accident was fatal, resulting in 1 fatality.

What aircraft was involved and where did it happen?

The accident on 29 Apr 1958 involved an Antonov AN-10, registration CCCP-L7256, operated by Antonov Industries, at Voronezh, Russia.

What was the probable cause of the accident?

Failure of the engine number one due to an overheating caused by an excessive use.

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