Crash of an Antonov AN-12AP near Omsukchan: 11 killed

Date & Time: Aug 9, 2011 at 1532 LT
Type of aircraft:
Operator:
Registration:
RA-11125
Flight Phase:
Flight Type:
Survivors:
No
Site:
Schedule:
Komsomolsk-on-Amur – Magadan – Keperveyem
MSN:
3 3 410 06
YOM:
1963
Flight number:
LN9209
Country:
Region:
Crew on board:
9
Crew fatalities:
Pax on board:
2
Pax fatalities:
Other fatalities:
Total fatalities:
11
Captain / Total flying hours:
15297
Captain / Total hours on type:
6263.00
Copilot / Total flying hours:
3939
Copilot / Total hours on type:
3838
Aircraft flight hours:
18709
Aircraft flight cycles:
9172
Circumstances:
The four engine aircraft departed Komsomolsk-on-Amur Airport on a cargo service (flight LN9209) to Keperveyem with an intermediate stop in Magadan, carrying 17,43 tons of various goods, two passengers and a crew of nine. The aircraft departed Komsomolsk-on-Amur Airport at 1437LT. At 1520LT, while cruising at an altitude of 7,500 metres about 430 km northeast from his departure point, the crew informed ATC about a fuel leak on the engine n°1, requested a descent to 6,600 metres then the clearance to return to Komsomolsk-on-Amur. After the engine n°1 caught fire, the crew declared an emergency and started an emergency descent. Out of control, the aircraft crashed on the slope of a mountain located about 82 km southwest from Omsukchan. The aircraft disintegrated on impact and the debris were found a day later at an altitude of 1,006 metres. All 11 occupants were killed. This Antonov AN-12 was the oldest model still in commercial service in Russia.
Probable cause:
The probable causes of the crash were:
Following the inflight shut down of engine number one and feathering of the number one propeller the longitudinal (roll) control of the aircraft was lost due to load-bearing properties of the left wing and possible damage to the left hand aileron control wiring resulting in the aircraft's uncontrolled excessive roll to the left and subsequent impact with terrain. The fire started in the tail section of the #1 engine nacelle and spread forward and onto the wing. The fire was most likely fed by fuel leaking from a fuel line connection to the low pressure fuel pump at engine #1, the fuel most likely ignited due to contact with hot engine parts. Due to the disintegration of the aircraft and fire damage it was not possible to establish the location of fuel leaks and the cause with certainty. The inability of the fire suppression system to extinguish such a fire in its early stages as well as the lack of checklists/guidelines in the aircraft's flight manual for fuel leaks inside the engine nacelle contributed to the delay of more than 2 minutes to shut the engine down. The mountainous terrain underneath the aircraft, low level overcast cloud and lack of time due to continued fire did not permit the crew to select a proper site for an emergency landing.
Final Report:

Crash of an Antonov AN-24B in Omsukchan

Date & Time: Feb 1, 1994 at 1616 LT
Type of aircraft:
Operator:
Registration:
RA-47718
Flight Phase:
Survivors:
Yes
Schedule:
Magadan - Omsukchan - Susuman - Magadan
MSN:
69900701
YOM:
1966
Country:
Region:
Crew on board:
5
Crew fatalities:
Pax on board:
48
Pax fatalities:
Other fatalities:
Total fatalities:
0
Aircraft flight hours:
38294
Aircraft flight cycles:
29173
Circumstances:
During the takeoff roll, at a speed of 170 km/h, the aircraft deviated to the right and collided with a snow bank. It cartwheeled and came to rest. While all 53 occupants evacuated safely, the aircraft was damaged beyond repair.
Probable cause:
It was determined that the runway surface was contaminated with snow and has not been cleared prior to takeoff. It was also reported that the runway lights and edge markings were not clearly visible due to snow.

Crash of a Yakovlev Yak-40K in Omsukchan

Date & Time: Aug 15, 1983
Type of aircraft:
Operator:
Registration:
CCCP-87201
Flight Phase:
Flight Type:
Survivors:
Yes
MSN:
9 74 12 56
YOM:
1977
Country:
Region:
Crew on board:
4
Crew fatalities:
Pax on board:
5
Pax fatalities:
Other fatalities:
Total fatalities:
0
Circumstances:
The aircraft was engaged in a cargo flight, carrying five passengers, four crew members and a load of 1,930 kilos of fish. Prior to departure, the crew allowed illegal passengers to board as well as additional cargo that was not weighted. During the takeoff roll, the captain realized he would not be able to takeoff so he decided to abandon the takeoff procedure and initiated an emergency braking manoeuvre. For unknown reasons, the crew started to brake two seconds later and reduced the speed lever seven seconds later only. Unable to stop within the remaining distance (reversers activated too late), the aircraft overran and came to a halt 200 meters further. A passenger was injured while eight other occupants were unhurt. The aircraft was damaged beyond repair (irreparable structural damages).
Probable cause:
The crew failed to prepare the flight properly and the aircraft was overloaded at the time of the accident with a CofG that was too far front. The crew was aware of the situation prior to takeoff.