Date & Time: Sep 28, 2012 at 0618 LT
Type of aircraft:
Dornier DO228
Operator:
Registration:
9N-AHA
Flight Phase:
Takeoff (climb)
Survivors:
No
Schedule:
Kathmandu - Lukla
MSN:
8123
YOM:
1987
Flight number:
SIT601
Country:
Nepal
Region:
Asia
Crew on board:
3
Crew fatalities:
3
Pax on board:
16
Pax fatalities:
16
Other fatalities:
0
Total fatalities:
19
Captain / Total flying hours:
8308
Captain / Total hours on type:
7112
Copilot / Total flying hours:
772
Copilot / Total hours on type:
519
Circumstances:
Less than two minutes after take off from runway 20, during initial climb, crew informed ATC he encountered a bird strike and that an engine failed. Captain tried to return to Kathmandu Airport but aircraft turn left, stalled and crashed in flames near Manohara River, 420 meters from the end of runway 20. All 19 occupants, among them 7 British and 5 Chinese citizens, were killed.
Causes:
During level flight phase of the aircraft, the drag on the aircraft was greater than the power available and the aircraft decelerated. That resulted in excessive drag in such critical phase of ascent lowering the required thrust. The investigation was unable to determine the reason for the reduced thrust.
- The flight crew did not maintain the airspeed above the stall speed and there was insufficient height available to recover when the aircraft departed controlled flight.
Contributory factors:
- The flight crew did not maintain V2 during the climb and so the power required to maintain the level flight was greater than it would otherwise have been,
- The flight crew did not maintain the runway centerline which removed the option of landing the aircraft on the runway remaining.
No bird remains were found inside the engines, there was evidence however that the Black Kite had been struck by the right hand propeller.
The NAAIC concluded the analysis: "The investigation was unable to determine the cause of the thrust reduction."

Source: AvHerald