Incident Details
While cruising at an altitude of 6,100 meters, the generator on engine number three failed. Debris from the failure punctured a hydraulic line, and the escaping hydraulic fluid came into contact with high-temperature engine elements, causing a fire.
Sequence of Events
The aircraft's fire extinguishing system did not operate as intended. In response, the flight crew shut down all three remaining engines and executed a gear-up landing in a field. After touchdown, the airplane slid for several yards before coming to rest.
Evacuation
All 97 occupants evacuated the aircraft without reported injuries.
Probable Cause
According to the official investigation, the probable cause was the failure of the generator on engine number three for an unknown reason. This failure led to the rupture of a hydraulic line and subsequent ignition of hydraulic fluid upon contact with engine components. The reason for the malfunction of the fire extinguishing system also remains unknown.