Date & Time: Jul 10, 1957 at 0920 LT
Type of aircraft:
Lockheed L-749 Constellation
Scheduled Revenue Flight
London – Athens – Khartoum – Addis Ababa
Crew on board:
Pax on board:
The aircraft left Khartoum International Aerodrome at 0555 hours GMT on 10 July carrying a crew of 6 and 14 passengers and was cleared to cruise at 17 500 feet. At 0610 hours, at about 10 500 feet altitude, the number two engine fire warning light for zones 2 and 3 came on and the warning bell rang. The engine was feathered. The CO2 bottle was released and concurrently an explosion followed by a violent fire, made it necessary (at approximately 0620) to land the aircraft with gear up on a large flat cultivated area. There were no injuries to passengers or crew, but the aircraft was almost totally destroyed by fire which continued burning on the ground.
This accident was due to the overheating of one of the brakes of the main landing gear during the aircraft's taxiing and take-off run. It was caused by a dragging brake and a leakage of hydraulic oil with resultant fire and tire blow out. The tire blow out resulted in damage to hydraulic oil and fuel lines within the confined area of No. 2 engine nacelle, between the rear of the engine fire wall and rear spar, and between the fuselage and left side of the landing gear wheel well doors.