16 fatalities

Aircraft Destroyed After Explosion and Fire During Flight from Hong Kong to Jakarta (VT-DEP)

Natuna Besar Island, IndonesiaFlight

On April 11, 1955, a Lockheed L-749 Constellation (registration VT-DEP) operated by Air India was involved in an aviation accident near Natuna Besar Island, Indonesia in flight. 16 people were killed. Investigators recorded the probable cause as: The cause of this accident was an explosion of a timed infernal machine placed in the starboard wheel well of the aircraft. This explosion resulted in the puncturing of No. 3 fuel tank and an uncontrollable fire. 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 2026-06-12Data APIEditorial standards
Aircraft registered VT-DEP
Aircraft registered VT-DEP. Photo: Alec Wilson from Hampton-in-Arden, UK / CC BY-SA 2.0, via Wikimedia Commons

During a flight from Hong Kong to Jakarta, an explosion in the starboard wheel well caused a fire that led to ditching. Only three of eight crew members survived; the aircraft was destroyed.

Flight and Passengers

The aircraft departed Hong Kong-Kai Tak Airport at 0425 GMT, bound for Jakarta. On board were 8 crew members and 11 passengers, all of whom were Chinese and European journalists traveling to Jakarta to participate in the Asia-Afro Bandung Conference.

Accident Sequence

Approximately five hours after takeoff, while cruising at 18,000 feet over the sea, a muffled explosion was heard. Smoke immediately entered the cabin through the cold air ducts, and a localized fire was detected on the starboard wing behind the number three engine nacelle. The crew commenced a rapid descent for ditching and broadcast distress signals. Despite firefighting actions, including feathering the number three engine, the fire spread rapidly. This led to hydraulic failure followed by electrical failure. During the final descent, dense smoke filled the cockpit, reducing visibility to almost nil.

Ditching and Aftermath

The aircraft struck the water with the starboard wing tip, and the nose submerged almost instantaneously. Only three crew members survived the accident; the aircraft was destroyed. The passengers were all journalists.

Probable Cause

According to the official investigation, the cause of the accident was an explosion of a timed infernal machine placed in the starboard wheel well. This explosion punctured the number three fuel tank, resulting in an uncontrollable fire. It is believed that the target was Chinese Premier Zhou Enlai, whose travel plans had been kept secret; he left China three days later.