New Delhi, Feb. 25 -- The Redbird Airways Pvt Ltd Beechcraft C90 (VT-AJV) that crashed in Jharkhand on Tuesday, claiming 7 lives, had no black boxes as the aircraft's maximum takeoff weight is below 5,700 kg, sources said.

According to civil aviation rules, cockpit voice recorders (CVR) or flight data recorders (FDR) are not mandated for aircraft with a maximum takeoff weight below 5,700 kg.

A team from the Aircraft Accident Investigation Bureau (AAIB) investigated the crash site on Wednesday and collected evidence from the wreckage to carry out further investigation.

The Redbird Airways Pvt Ltd Beechcraft C90 aircraft, registered VT-AJV, was operating a medical evacuation flight from Ranchi to Delhi when it crashed on Monday evening i...