Civil Aviation Authority, Bangladesh (CAAB) Chairman Air Vice Marshal M Naim Hassan has said it might take more than a year to complete the investigation into the US-Bangla plane crash.
"Normally, investigation into any plane crash takes one year," said the CAAB chairman while talking to reporters at his office on Thursday.
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As the plane crash took place in Nepal, they are investigating the incident and a Bangladesh team will assist them, he said.
Naim Hassan said: "The black box will be sent to Canada, while other parts of the aircraft will be tested. It'll take time to complete all the formalities."
It is not possible to set a fixed time to end the probe, he said.
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The identification process of the deceased is underway, and it will be completed soon. Post-mortem examinations have been performed on 19 bodies, said the CAAB chairman.
The US-Bangla Airlines flight BS211, which flew from Dhaka to Kathmandu carrying 67 passengers and four crew members, crashed at Tribhuvan International Airport in the capital of Himalayan country of Nepal on Monday, leaving 51 people, including 26 Bangladeshis, dead.