21 fatalities

Aircraft Collision with Megamalai Mountain Range (VT-DXG)

Cumbum, IndiaFlight

On December 9, 1971, a Hindustan Aeronautics HAL-748 (registration VT-DXG) operated by Indian Airlines was involved in an aviation accident near Cumbum, India in flight. 21 people were killed. Investigators recorded the probable cause as: A navigation error by the flying crew, who likely misinterpreted certain instrument settings, caused the aircraft to be off course to the north by 46 kilometers. 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

An aircraft crashed into a mountain slope in the Megamalai Range while flying from Trivandrum to Madurai, killing 21 people and injuring 10.

Incident Overview and Casualties An aircraft was operating a flight from Trivandrum to Madurai when it collided with a mountain slope in the Megamalai Mountain Range. The accident occurred while the aircraft was cruising at an altitude of 5,200 feet in marginal weather conditions. The impact site was located approximately 90 kilometers southwest of Madurai Airport, and the wreckage was subsequently found southeast of Cumbum. The aircraft was destroyed in the crash. All four crew members and 17 passengers were killed, while 10 other individuals sustained serious injuries. ## Official Investigation Findings The official investigation determined that the aircraft was off course to the north by 46 kilometers at the time of the accident. The probable cause was attributed to a navigation error by the flying crew, who likely misinterpreted certain instrument settings.