The mid-air collision near Delhi, India, on 12 November, 1996, which killed 349 people, happened because the Chimkentavia Airlines Ilyushin Il-76 freighter was 1,000ft (300m) lower than its cleared altitude, according to Indian press reports leaked from the final accident investigation report. The Il-76 collided with an outbound Saudi Arabian Airlines Boeing 747-100, with 312 people on board, which had been levelled at 14,000ft, as cleared.

 

Source: Flight International