Crash of an Antonov AN-24B in Ust-Kuyga

Date & Time: Feb 3, 1993 at 1209 LT
Type of aircraft:
Antonov AN-24
Operator:
Yakutavia
Registration:
RA-47180
Flight Phase:
Takeoff (climb)
Flight Type:
Scheduled Revenue Flight
Survivors:
Yes
Site:
Airport (less than 10 km from airport)
Schedule:
Ust-Kuyga - Nizhneyansk
MSN:
99901905
YOM:
1969
Location:
Ust-Kuyga
Republic of Yakutia (Sakha)
Country:
Russia
Region:
Asia
Crew on board:
4
Crew fatalities:
Pax on board:
23
Pax fatalities:
Other fatalities:
Total fatalities:
0
Circumstances:
During the takeoff roll at Ust-Kuyga Airport, the aircraft became uncontrollable. It veered off runway to the right and came to rest. All 27 occupants escaped uninjured while the aircraft was damaged beyond repair.
Probable cause:
Loss of directional control for unknown reasons.

Crash of an Antonov AN-30 near Nizhneyansk: 10 killed

Date & Time: Mar 22, 1992 at 0237 LT
Type of aircraft:
Antonov AN-30
Operator:
Myachkovo Avia
Registration:
CCCP-30002
Flight Phase:
Flight
Flight Type:
Cargo
Survivors:
No
Site:
Plain, Valley
Schedule:
Anadyr - Chokurdakh - Tiksi - Baku
MSN:
1403
YOM:
1978
Location:
Nizhneyansk
Republic of Yakutia (Sakha)
Country:
Russia
Region:
Asia
Crew on board:
5
Crew fatalities:
Pax on board:
5
Pax fatalities:
Other fatalities:
Total fatalities:
10
Circumstances:
The aircraft departed Anadyr Airport on a cargo flight to Baku with intermediate stops in Chokurdakh and Tiksi, carrying five passengers and five crew members. While in cruising altitude by night, the aircraft suffered violent oscillations and started to pitch up and down. It entered an uncontrolled descent and at an altitude of 2,000 metres, it partially disintegrated and eventually crashed at a speed of 670 km/h in an icy river. All 10 occupants were killed.
Probable cause:
It was determined that the crew disengaged and re-engaged several times the automatic pilot system for unknown reasons. This created tail and elevators' movements and the reaction of the crew was inappropriate. The aircraft suffered violent oscillations on both roll and pitch axis then entered an uncontrolled descent. The partial disintegration was the consequence of aerodynamic forces that exceeded the aircraft certification.

Crash of a PZL-Mielec AN-2T in Yukagir: 1 killed

Date & Time: Apr 11, 1972 at 1220 LT
Type of aircraft:
PZL-Mielec AN-2
Operator:
Registration:
CCCP-44937
Flight Phase:
Takeoff (climb)
Flight Type:
Charter/Taxi (Non Scheduled Revenue Flight)
Survivors:
Yes
Site:
Plain, Valley
Schedule:
Yukagir - Nizhneyansk
MSN:
1G25-09
YOM:
1963
Location:
Yukagir
Republic of Yakutia (Sakha)
Country:
Russia
Region:
Asia
Crew on board:
2
Crew fatalities:
Pax on board:
2
Pax fatalities:
Other fatalities:
Total fatalities:
1
Aircraft flight hours:
7197
Circumstances:
The aircraft was on its way back from Yukagir to Nizhneyansk with a crew of two and two passengers, investigators. They were returning to Nizhneyansk after they completed investigations following an incident that involved another AN-2 registered CCCP-13704 few days ago. After takeoff, while climbing to a height of 60 meters with flaps up, the airplane banked left to an angle of 45° then stalled and struck the ground. Out of control, it crashed in a snow covered field and came to rest. A passenger was killed while three other occupants were seriously injured. The aircraft was destroyed. At the time of the accident, wind was gusting from 110° at 54 km/h with an OAT of -15° C.
Probable cause:
It was determined that the crew forgot to position the flaps down for takeoff.
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