Not cool for the passengers on both A/C but this never should have happened.
A major ground collission occured at Jakarta-Halim Airport in darkness when the Boeing 737 has commenced its to take-off from runway 24.
At a point about 1000 meters down the runway, its left outer wing hit the tail of the smaller ATR-42 aircraft.
The force of the collision literally ripped the entire tail off and and the left wing of the ATR off. About 90% of tail and the left wing from the wingtip to the left engine were missing.
Full story
here.