No fatalities

1976-07-14: Lisunov LI-2 (CCCP-13369) — MAP - Ministerstvo Aviatsionnoi Promyshlennosti - Minaviaprom — Tashkent-Yuzhny, Uzbekistan

Tashkent-Yuzhny, UzbekistanTakeoff (climb)

On July 14, 1976, a Lisunov LI-2 (registration CCCP-13369) operated by MAP - Ministerstvo Aviatsionnoi Promyshlennosti - Minaviaprom was involved in an aviation accident near Tashkent-Yuzhny, Uzbekistan during takeoff. No fatalities were reported. Investigators recorded the probable cause as: The total weight of the aircraft was above MTOW at the time of the accident and the airplane has been refueled with a too low octane fuel, which caused the engines to lose power during takeoff. 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 1781229071Data APIEditorial standards

An airplane stalled shortly after liftoff during initial climb, crashing back onto the runway and veering off into flames. All occupants escaped uninjured; the aircraft was destroyed. Investigators found it was overweight and used low-octane fuel.

Accident Sequence

Upon liftoff, the airplane entered an initial climb. Almost immediately, it stalled—losing lift and beginning to descend. The aircraft crashed back onto the runway, then veered off the paved surface. It eventually came to a stop surrounded by flames. The fire extensively damaged the airframe.

Occupant and Aircraft Status

All individuals aboard the aircraft escaped the crash and fire without physical injury. The aircraft, however, was destroyed as a result of the accident sequence and subsequent fire. It was declared a total loss.

Investigation and Findings

The official investigation analyzed operational data and physical evidence. Key findings included that the aircraft's total weight exceeded its maximum takeoff weight (MTOW) at the time of the accident. Additionally, the fuel used during refueling had an octane rating below the minimum required for the engines. This combination resulted in a loss of engine power during the takeoff phase. The loss of power led to insufficient thrust, causing the stall and subsequent crash.

Probable Cause

The probable cause, as determined by investigators, was the aircraft being operated above its maximum takeoff weight and being fueled with low-octane fuel, which caused the engines to lose power during takeoff.