Seventy-one people were on the plane that, arriving from Dhaka in cloudy weather, clipped the fence at Kathmandu and burst into flames, official said.
According to the Aviation Safety Network, "A thunderstorm was passing the airport with cumulonimbus clouds passing by at 2,500 feet". "We are yet to ascertain the reason behind the unusual landing".
"After hearing ATC [air traffic control] conversation, we assume that that there was no negligence by our pilots".
He said the horrific accident took place after the pilot took an opposite direction to descend the plane, not obeying the instructions of the Air Traffic Controller (ATC). After that, the controller informed the pilot that his alignment was not correct, but the pilot did not reply.
Amanda Summers, a United States citizen who works in Nepal, witnessed the crash from her office, and said it was "unclear" if the plane had reached the runway. Other sources said the aircraft was 17 years old. Officials said 32 Bangladeshi nationals, 33 Nepalis, one Chinese national and one Maldivian citizen were among the 71 people aboard. "It was flying very low", he said.More news: Storm Team 11 Forecast: Rain Turns To Wintry Mix Tomorrow Morning
There is silence for a while, then a "Fire One" calls the tower, indicating that a crash has occurred and the airport fire tender has been activated. Everyone just froze looking at it.
The wreckage of the plane that crashed at the worldwide airport in Kathmandu on Monday.
US-Bangla operates Boeing 737-800 and smaller Bombardier Dash 8 Q-400 planes.
"For a few minutes no-one could believe what was happening".
A seven-member team of investigators from the airline will leave Dhaka for Kathmandu on Tuesday, he added.More news: Saudi Crown Prince praises United Kingdom visit outcomes
"The plane shot off the runway while it was about to crash into the hanger and immediately caught fire", an airport official was quoted as saying by the Himalayan Times.
Kathmandu airport lies in a bowl-shaped valley with the Himalayas to the north, making it a notoriously challenging place to land. Moments later, the pilot says he is on approach from the south, and the controller also approves that approach, according to The Associated Press.
Siphengphet and Mark Masluch said the planes are "safe and reliable" and other planes haven't been grounded.
Just two months earlier, a Thai Airways aircraft had crashed near the same airport, killing 113 people.More news: Megan Markle's secret baptism with water from Jordan River