In the recording, the pilot and the tower shifted back and forth about whether the pilot should approach the runway from the north or the south.
KATHMANDU, Nepal—“I say again, turn!” the air traffic controller called over the radio, his voice rising, as the flight from Bangladesh swerved low over the runway at Kathmandu’s small airport.
Seconds later, the plane crashed into a field beside the runway, erupting in flames and leaving 50 of the 71 people on board dead.
That moment Monday appeared to result from minutes of confused chatter between the control tower and the pilot of the US-Bangla passenger plane, as they discussed which direction the pilot should use to land safely at the airport’s single runway.
A separate radio conversation between the tower and at least one Nepali pilot reflected the sense of miscommunication.
“They appear to be extremely disoriented,” a man said in Nepali, watching as Flight BS211 made its approach, though it was not clear if the voice belonged to a pilot or the tower. “Looks like they are really confused,” said another man.
In the recording, posted by air traffic monitoring website liveatc.net, the pilot and the tower shifted back and forth about whether the pilot should approach the runway from the north or the south.
Moments later, the controller came back on the air, his voice clearly anxious, and told the pilot, “I say again, turn!” Seconds after that, the controller ordered fire trucks onto the runway.
The plane, which was heading from Bangladesh’s capital, Dhaka, to Kathmandu, was carrying 67 passengers and four crew members.
Kathmandu officials and the airline laid the blame for the accident on each other.
The airport’s general manager told reporters Monday that the pilot did not follow the control tower’s instructions and approached the runway from the wrong direction.
“The airplane was not properly aligned with the runway. The tower repeatedly asked if the pilot was OK and the reply was ‘Yes,’” said the general manager, Raj Kumar Chetri.
But Imran Asif, CEO of US-Bangla Airlines, told reporters in Dhaka that “we cannot claim this definitely at the moment, but we are suspecting that the Kathmandu air traffic control tower might have misled our pilots to land on the wrong runway.”