Air India Express Flight 812 was a scheduled passenger service from Dubai to Mangalore which at around 01:00 UTC on 22 May 2010, overshot the runway on landing, fell over a cliff and caught fire, spreading wreckage across the surrounding hillside. Of the 160 passengers and six crew members on board, only eight passengers survived. Flight IX-812 from Dubai to Mangalore crashed into the thick forested valley off the runway after slamming through a boundary wall. The runway at Mangalore airport is situated on a hillock, which in aviation parlance is known as a table top runway. Basically, the runway strip is built on flat land, but the area situated at either end of the runway, and its sides slope downwards

With its 158 fatalities, the accident was the third deadliest aviation disaster in India, after the 1996 Charkhi Dadri mid-air collision which killed 349, and the 1978 crash of Air India Flight 855, which killed 213.It marked the first major Indian aviation accident since the July 2000 crash of Alliance Air Flight 7412 in Patna. At the time, the accident was the deadliest crash of a 737 aircraft (all series) and the eighth hull loss of a Boeing 737–800 aircraft. The crash caused the highest number of aviation fatalities in 2010 and was the second of the year to involve a 737–800. It was also the second time that an aircraft had overshot the runway at Mangalore.