What happened
During the initial climb phase following departure from Calcutta-Dum Dum Airport, the flight crew reported an engine malfunction to ground control. In response to this mechanical issue, the decision was made to abort the flight to Assam and attempt an emergency landing back at the airfield.
While attempting the return, the aircraft experienced a stall and descended into a field in Hatiara, situated approximately 4 km south of the airport. The impact resulted in the partial destruction of the airframe. There were three fatalities among the crew members, which included the pilot, co-pilot, and radio operator.
At the time of the accident, the aircraft was transporting a cargo consisting of iron and steel products.
Findings
While investigators were unable to pinpoint the specific reason for the engine failure, evidence indicated that the aircraft was overloaded during the flight. This excessive weight is believed to have negatively impacted the performance of the engines during the critical climb phase.