Date & Time:
Jan 29, 1970 at 1927 LT
Type of aircraft:
Tupolev TU-124
Operator:
Registration:
CCCP-45083
Flight Phase:
Landing (descent or approach)
Flight Type:
Scheduled Revenue Flight
Survivors:
Yes
Site:
Mountains
Schedule:
Leningrad - Murmansk
MSN:
5 35 17 06
YOM:
1965
Flight number:
SU145
Country:
Russia
Region:
Asia
Crew on board:
6
Crew fatalities:
3
Pax on board:
32
Pax fatalities:
8
Other fatalities:
0
Total fatalities:
11
Aircraft flight hours:
7425
Aircraft flight cycles:
5854
Circumstances:
Following an uneventful flight by night at an assigned altitude of 8,400 meters, the crew was cleared to descent to 2,400 bound for Kilpyavr AFB near Murmansk. While in a 3° nose-down attitude, the airplane struck the snow covered slope of a hill (240 meters high), slid for 624 meters then lost its both engines and wings and came to a halt, broken in two. The wreckage was found 29,5 km from the airport and 8 km to the right of the extended centerline. Eight passengers and three crew members (the captain, the navigator and the flight engineer) were killed while 27 other occupants were injured.
Probable cause:
It was determined that the pilot-in-command started the descent prematurely, causing the aircraft to descend below the minimum prescribed altitude. The lack of visibility caused by night and the absence of any visual reference points on the ground did not allow the crew to know his exact position and to distinguish the ground obstacles. ATC allowed the crew to perform a straight-in approach with radar control. The following factors were considered as contributing:
- Absence of an established approach procedure,
- Intermittent loss of VHF communications during the approach procedure,
- The relative inexperience of the flying crew with less than 500 flying hours on this type of aircraft.
- Absence of an established approach procedure,
- Intermittent loss of VHF communications during the approach procedure,
- The relative inexperience of the flying crew with less than 500 flying hours on this type of aircraft.
