On 24 January 1966, Air India Flight 101 Kanchenjunga, a Boeing 707-420 (registered VT-DMN) carrying 117 people (106 passengers and 11 crew) crashed on Mont Blanc, France killing all 117 on board including Indian scientist Homi J. Bhabha. The cause of crash was controlled flight into terrain, which was attributed to a navigational miscalculation by the pilots during while descending towards Geneva Airport.
On 1 January 1978, Air India Flight 855 Emperor Ashoka, a Boeing 747-237B (registered VT-EBD) crashed into the Arabian Sea post taking off from Bombay after the pilot became disorientated due to instrument failure, killing all 190 passengers and 23 crew on board.
On 21 June 1982, Air India Flight 403 Gouri Shankar, a Boeing 707-420C (registered VT-DJJ) carrying 99 passengers and 12 crew from Kuala Lumpur to Bombay via Madras crashed while landing at Sahar airport during a rainstorm. The fuselage broke apart, and seventeen people, including two crew members were killed. The cause of the crash was undershooting the runway due to flight crew error and miscalculation.