ASN Aircraft accident Boeing 747-237B VT-EDU Bangkok-Don Muang International Airport (BKK)
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Status:Accident investigation report completed and information captured
Date:Saturday 2 June 1984
Type:Silhouette image of generic B742 model; specific model in this crash may look slightly different
Boeing 747-237B
Registration: VT-EDU
MSN: 21182/277
First flight: 1975-12-15 (8 years 6 months)
Engines: 4 Pratt & Whitney JT9D-7J
Crew:Fatalities: 0 / Occupants: 21
Passengers:Fatalities: 0 / Occupants: 293
Total:Fatalities: 0 / Occupants: 314
Aircraft damage: Substantial
Aircraft fate: Repaired
Location:Bangkok-Don Muang International Airport (BKK) (   India)
Phase: En route (ENR)
Nature:International Scheduled Passenger
Departure airport:Bangkok-Don Muang International Airport (BKK/VTBD), Thailand
Destination airport:Delhi-Palam Airport (DEL/VIDP), India
Air-India flight 315 to Delhi, India, suffered a No 4 engine fire some five minutes after takeoff from Bangkok, Thailand. Both extinguishing bottles were fired, but the fire warning persisted. Fuel dumping was commenced as the crew prepared to return to Bangkok's Don Muang Airport. Meanwhile the flight engineer noted an actual fire as he went down to the passenger cabin to observe.
Fuel dumping was abandoned and the flight made an immediate overweight landing on runway 03L. The fire was contained by the fire services on the ground. During the evacuation, eight passengers were injured.

Probable Cause:

The probable cause of the accident has been attributed as:
The inflight engine fire was caused by a fuel leak on the left forward side of the engine near the air to fuel convertor valve which was observed by the Aircraft Maintenance Engineer during Transit 'C' Check of the aircraft prior to take off but the leak was not conclusively identified and remained unrectified.
The injuries to the passengers were caused as they overshot the escape slide ends due to momentum and grazed the hard ground during the process of emergency evacuation. Non-adherence to the emergency evacuation procedure by some of the cabin crew members was a contributory factor".

Engine fire
Forced landing on runway

» Accidents summary 1984 / Ministry of Tourism and Civil Aviation, CAD, ASD

Follow-up / safety actions

NTSB issued 2 Safety Recommendations

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This map shows the airport of departure and the intended destination of the flight. The line between the airports does not display the exact flight path.
Distance from Bangkok-Don Muang International Airport to Delhi-Palam Airport as the crow flies is 2905 km (1815 miles).

This information is not presented as the Flight Safety Foundation or the Aviation Safety Network’s opinion as to the cause of the accident. It is preliminary and is based on the facts as they are known at this time.
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