He felt there could be two reasons why the helicopter's pilots did not send distress signals. Either, an explosion had taken place mid-air or following its forced landing, giving the pilots absolutely no time to send out a distress signal.
"Choppers usually have equipment that emit distress signals in case of a forced landing or a crash," Air Marshal Kariappa said.
Once a pilot enters a cumino nimbus cloud, the aircraft gets sucked in and is forced downwards. There is very little that a pilot can do in such a situation. The aircraft starts to pull downwards towards the ground in such a situation and there is no control on where the aircraft will land.