Yeti Airlines flight 691 crashed into a gorge near Pokhara, Nepal on 15 January. The flight was operating from Kathmandu to Pokhara’s new international airport, which opened just this month. YT691 was operated by an ATR 72-500 registered 9N-ANC.
UPDATE 1: Authorities announced they have recovered the flight data recorder and cockpit voice recorder in good condition.
Yeti Airlines 691
Yeti Airlines 691 departed from Kathmandu at 04:47 UTC. Flightradar24 receivers gathered position data from the aircraft until 5:05 UTC. The last signal received from the aircraft was at 5:12 UTC at an altitude of 2875 ft AMSL. Pokhara Airport elevation is approximately 2700 ft AMSL.
Throughout the flight, the transponder on 9N-ANC sent erroneous altitude and speed data. The rapid change in altitude shown in the graphic above (as noted by the different colors in the trail) is indicative of those erroneous values.
The flight stopped transmitting position data 7 minutes before the last data from the aircraft was received. The aircraft continued to send altitude, speed, and extended Mode S data until 5:12 UTC.
Flightradar24 downloaded and processed granular ADS-B data (multiple frames per second) to better understand the flight data. Using historical data from other similar aircraft operating the same route over the past few weeks and the “MCP alt” settings received for this flight, we’ve removed erroneous altitude data to show a clearer picture of the flight path.
Aircraft information
Yeti Airlines 691 was operated by an ATR 72-500 registered 9N-ANC (MSN 754). The aircraft was initially delivered in 2007 and acquired by Yeti Airlines in 2019.
