Nepal began national mourning day on Monday, a day after the plane crash.
The crash killing at least 68 of the 72 people aboard while attempting to land at a newly opened airport.
Rescue workers repelled down a 300-meter gorge to continue the search for the four missing people.
It was a domestic flight in Kathmandu to Pokhara in Nepal, the country`s Civil Aviation Authority said, in the worst air crash in three decades in the small Himalayan nation.
Hundreds of rescue workers were scouring the hillside where the Yeti Airlines flight, carrying 72 people from the capital Kathmandu, went down.
Local TV showed rescue workers scrambling around broken sections of the aircraft. Some of the ground near the crash site was scorched, with licks of flames visible.
The crash is Nepal`s deadliest since 1992, the Aviation Safety Network database showed, when a Pakistan International Airlines Airbus A300 crashed into a hillside upon approach to Kathmandu, killing all 167 people on board.
The plane made contact with the airport from Seti Gorge at 10:50 a.m. (0505 GMT), the aviation authority said in its statement. "Then it crashed."
Police official Ajay K.C. said rescue workers were having difficulty reaching the site in a gorge between two hills near the tourist town`s airport.
