Plane crash AN-12 in the Kharkov region. 1985
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Plane crash AN-12 in the Kharkov region. 1985

Plane crash AN-12 MAP USSR in Kharkov region

· Date of the crash: November 25.09.1985, XNUMX

· Country of the crash: the USSR

· Location of the crash: Ukrainian SSR, 31 km southwest of Kharkiv airport

· aircraft Brand: An-12

· Registration of aircraft: CCCP69321

· Name of air carrier: MAP USSR KnAAPO they Gagarin Komsomolsk-on-Amur

Chronology of events:

The crew performed night flight on transportation of cargo. Heading on the echelon 7500 m at Domodedovo airport, the crew reported that a fire had arisen from the left engine. The dispatcher allowed to decrease, reported the range of flights at the Kharkov airfield and the course of landing for an emergency landing. With a decline, the commander reported: "We are falling, we lost control," then the communication with the crew ceased. The plane was organized by search organized in 6,5 km to the west from the village of Rakitnoye Novovodolazhskogo district of Kharkov region (in 31 km to the south-west from Kharkov airport). The plane with an angle close to 90 degrees, collided with the ground, exploded, in an inverted position, partially burnt and collapsed. Accompanying cargo and crew were lost. The commander from the moment of the report on the fire and to the report on loss of controllability was 4 minutes 55 seconds.

Data on victims:

· A total of 9 people were on board: 5 crew members and 4 passengers. A total of 9 people died: crew members 5, passengers 4.

Details of the crash:

· Flight Stage: Horizontal (cruising) flight

· Identified causes of the crash: equipment failure

Data on the plane:

· Aircraft make: An-12

· Airplane ID: CCCP69321

· Country in which the aircraft was registered: USSR

· Aircraft production date: 31.08.1961

· Aircraft serial number :: 1901708

· Aircraft operating hours: 14251

· Aircraft operating cycles: 5707

Flight data:

· Flight type: Cargo

· Aviation company: MAP of the USSR, KnAAPO named after Gagarin, Komsomolsk-on-Amur

· Country in which the aviation company was registered: USSR

· Flew from: Dnepropetrovsk

· Flew to: Moscow (Domodedovo)

· Original item: Dnepropetrovsk

· Final point: Komsomolsk-on-Amur

details

The findings, which investigated plane crash

The investigation found that the cause of the catastrophe was a fire in the tail of the engine nacelle and in the wing due to the intense fuel leakage that caused heating and loss of strength of the wing's power components, left-hand hitch assemblies, air separation from the aircraft of the middle left wing, left propulsion system and , as a result, the loss of controllability and the fall of the aircraft. Continuous intensive leakage due to the appearance of fire led to its development in the wing and nacelle, which revealed the inability to eliminate the fire by fire extinguishing system. The most probable places of fuel leak are the durite connections behind or in front of the overlapping (fire) crane SU # 1. In view of the fire and severe destruction of the aircraft at the site of the fall, establish unambiguously the nature of the malfunction, the place of leakage and the cause that led to the fuel leakage was not possible. The fire that spread in the pre-wagon part was the most likely cause of the destruction of the wiring of the aileron control.

What is the electrical control of ailerons? This An12!

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