Aircraft engine failure and runway excursion during takeoff

No fatalities • Tashkent-Yuzhny, Uzbekistan • Takeoff (climb)

An aircraft experienced an engine power loss immediately after liftoff, resulting in a stall and subsequent runway fire with no injuries reported.

What happened

During the initial climb phase following takeoff, the aircraft experienced a sudden loss of engine power. This failure led to an aerodynamic stall, causing the plane to descend back onto the runway surface. After impacting the runway, the aircraft veered off the paved surface and subsequently caught fire. Despite the intensity of the flames that destroyed the airframe, all occupants managed to evacuate the wreckage without sustaining any injuries.

Findings

Investigations into the accident identified two primary contributing factors related to the aircraft's configuration and fuel quality. First, the total weight of the aircraft exceeded its maximum takeoff weight (MTOW) at the time of departure. Second, the engines were supplied with fuel containing an insufficient octane rating, which directly resulted in the loss of engine performance during the critical takeoff sequence.

Probable cause

The engine power loss was caused by the aircraft operating above its maximum takeoff weight and the use of low-octane fuel.

Frequently asked questions

What happened in the 1976-07-14 Lisunov LI-2 accident near Tashkent-Yuzhny, Uzbekistan?

An aircraft experienced an engine power loss immediately after liftoff, resulting in a stall and subsequent runway fire with no injuries reported.

Were there any fatalities in the 1976-07-14 Lisunov LI-2 accident?

No fatalities were recorded in this accident.

What aircraft was involved and where did it happen?

The accident on 1976-07-14 involved a Lisunov LI-2, registration CCCP-13369, operated by MAP - Ministerstvo Aviatsionnoi Promyshlennosti - Minaviaprom, at Tashkent-Yuzhny, Uzbekistan.

What was the probable cause of the accident?

The engine power loss was caused by the aircraft operating above its maximum takeoff weight and the use of low-octane fuel.

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