Aviation authorities said they had recovered the flight data recorder from the charred wreckage of the plane, which burst into flames after crashing into a football field near Kathmandu airport on Monday killing 49 people.
Meanwhile, Bangladeshi airline said on Tuesday its two pilots aboard the plane had both received special training to land at Kathmandu airport and had successfully handled previous flights.
"There are reasons why Nepal has such a relatively high accident rate, many of those are because of the challenges of operating in mountain airfields that surround Nepal", said Blackie, who was part of a team that probed a 2016 crash of a small turboprop plane in Nepal.
He said the pilot, Capt. Abid Sultan, was a former air force officer and had flown the Bombardier Q400 series aircraft for more than 1,700 hours and was also a flying instructor with the airline. Officials at Kathmandu Medical College, the closest hospital to the airport said they were treating 16 survivors.
There were 33 Nepali passengers, 32 from Bangladesh, one from China and one from the Maldives.
Eventually the plane made an attempt to land on the runway it was originally meant to use, but crashed short of it, broke into pieces and caught fire.
On Tuesday, local aviation officials and airline representatives again traded blame for whether pilot error or a wrong instruction relayed to the cockpit from the airport's traffic control tower contributed to the disaster, the deadliest airliner crash at the airport in 26 years.
At this point, in the audio conversation, Nepali pilots on the ground are heard warning the ATC that the Flight 211 pilot seems disoriented and that he should be assisted by radar vectoring, as the visibility in the hills is bad.
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The Centre, by "failing" to respond to the state's concerns, was causing deep anguish among the people, the Chief Minister said. Chief Minister Naidu further criticised the Centre for saying no to railway zone for Visakhapatnam.
The head of Nepal's civil aviation authority rejected suggestions that the airport's creaking facilities played a role in the crash.
The leaked conversation between the pilot Sultan and an air-traffic controller reveals moments of confusion over which end of the runway the plane should land from after it circled the airport twice. In March, an worldwide aircraft tried twice to land at the TIA, but failed due to the crosswind.
Director General of the Civil Aviation Authority of Nepal (CAAN), Sanjib Gautam said that preliminary investigation showed the US-Bangla Airline passenger plane crashed because of abnormal landing.
Tribhuvan has a single 10,007-feet (3,050-metre) concrete runway orientated 02/20.
The ATC reacted: "That's good, but do not land".
"Based on his experience, we can not immediately judge that the captain was disoriented", said a Nepali pilot, who flies in the domestic route. "A three-minute conversation between the pilot and the air traffic control before the landing indicated that they sent a wrong signal to the pilot".
The latter responds and says "We would like to land on 20"; he is cleared to land on that end of the runway, the report said.
"Our pilot had no fault", he said.