Crash of a PZL-Mielec AN-28 in Ust-Nem: 15 killed

Date & Time: Oct 19, 1992 at 1058 LT
Type of aircraft:
Operator:
Registration:
CCCP-28785
Flight Phase:
Survivors:
Yes
Schedule:
Ust-Nem – Syktyvkar
MSN:
1AJ005-18
YOM:
1988
Flight number:
302
Country:
Region:
Crew on board:
2
Crew fatalities:
Pax on board:
14
Pax fatalities:
Other fatalities:
Total fatalities:
15
Aircraft flight hours:
1486
Aircraft flight cycles:
1692
Circumstances:
Shortly after takeoff from Ust-Nem Airport, while climbing to a height of about 30 metres, the left engine failed and its propeller autofeathered. After the crew retracted the flaps, the aircraft rolled to the left, adopted a high angle of attack then struck trees and crashed in a wooded area located 500 metres from the runway, bursting into flames. A passenger was injured while 15 other occupants were killed.
Probable cause:
It is believed that the left engine failed during initial climb after wet snow entered the air intake. The takeoff procedure was completed from a runway covered with slush and wet snow. The following contributing factors were reported:
- The crew retracted the flaps prematurely,
- Lack of crew training on this type of aircraft,
- The distance with ground was insufficient to expect recovery.

Crash of a Tupolev TU-134AK near Vizinga: 54 killed

Date & Time: Jul 2, 1986 at 1027 LT
Type of aircraft:
Operator:
Registration:
CCCP-65120
Flight Phase:
Survivors:
Yes
Schedule:
Vorkuta - Syktyvkar - Moscow
MSN:
60482
YOM:
1978
Flight number:
SU2306
Country:
Region:
Crew on board:
6
Crew fatalities:
Pax on board:
86
Pax fatalities:
Other fatalities:
Total fatalities:
54
Aircraft flight hours:
13988
Aircraft flight cycles:
7989
Circumstances:
The aircraft departed Syktyvkar Airport at 0955LT bound for Moscow and continued to climb in normal weather conditions. Twelve minutes later, while cruising at an altitude of 5,600 meters, the fire alarm connected to the rear cargo compartment activated in the cockpit. The flight engineer was dispatched to the rear of the cabin to check the situation and came back less than two minutes later, confirming that smoke was spreading. Instead of declaring an emergency and informing ATC about the situation according to published procedures, the captain decided to inspect the rear of the cabin with the flight engineer. They elected to extinguish the fire but this was unfortunately not possible. They returned to the cockpit and in the meantime, the airplane continued to climb to 6,700 meters. The captain contacted ATC, declared an emergency more than 4 minutes after the fire alarm activated and was cleared to return to Syktyvkar. At this time, the aircraft position was about 140 km from Syktyvkar Airport. The captain started an emergency descent and at an altitude of 1,200 meters, flaps and gear were lowered. The crew realized it would not be able to reach Syktyvkar Airport so he attempted an emergency landing on land. In a reduced visibility due to rain falls, the aircraft struck trees, lost its both wings and crashed 340 meters further in a dense wooded area, bursting into flames. Four crew members and 34 passengers were rescued while 54 other occupants were killed. The aircraft was totally destroyed by impact forces and fire.
Probable cause:
As the aircraft was completely destroyed by fire, investigations were unable to determine the exact source of fire that started in the rear cargo compartment. It was reported that the crew tried, without success, to extinguish the fire. Also smoke spread in the cabin, asphyxing people that lost consciousness or died before the accident.

Crash of a PZL-Mielec AN-2P in Ust-Kulom: 15 killed

Date & Time: Nov 26, 1981 at 1013 LT
Type of aircraft:
Operator:
Registration:
CCCP-01808
Flight Phase:
Survivors:
No
Schedule:
Ust-Kulom-Syktyvkar
MSN:
1G107-55
YOM:
1969
Flight number:
SU210I
Country:
Region:
Crew on board:
3
Crew fatalities:
Pax on board:
12
Pax fatalities:
Other fatalities:
Total fatalities:
15
Aircraft flight hours:
11704
Aircraft flight cycles:
16670
Circumstances:
Few minutes after takeoff from Ust-Kulom Airport, en route to Syktyvkar, the single engine airplane collided with an Aeroflot PZL-Mielec AN-2TP registered CCCP-40564 that was inbound to Ust-Kulom on a flight from Syktyvkar. While the second airplane was able to land without further incident, the first airplane entered a dive and crashed in a field located 12 km from the airport. All 15 occupants were killed. At the time of the accident, the visibility was limited due to low clouds.
Probable cause:
It was determined that the collision was the consequence of the following:
- The crew of AN-2 CCCP-01808 failed to follow the departure route and altitude, departure procedures,
- Limited visibility due to low clouds,
- Lack of ATC assistance who failed to transmit suitable information to both crews,
- Late detection of the climbing aircraft by the inbound crew.

Crash of a PZL-Mielec AN-2 near Syktyvkar: 1 killed

Date & Time: Mar 23, 1977 at 1330 LT
Type of aircraft:
Operator:
Registration:
CCCP-92841
Survivors:
Yes
Schedule:
Timsher – Ust-Kulom – Syktyvkar
MSN:
1G52-33
YOM:
1964
Flight number:
SU384
Country:
Region:
Crew on board:
2
Crew fatalities:
Pax on board:
7
Pax fatalities:
Other fatalities:
Total fatalities:
1
Aircraft flight hours:
12589
Aircraft flight cycles:
20460
Circumstances:
The single engine airplane departed Ust-Kulom Airport at 1228LT bound for Syktyvkar with seven passengers and a crew of two on board, accompanied by a second Aeroflot AN-2 (CCCP-98382) that left at the same time. En route, weather conditions worsened and both crew lost visual contact with each other. Approaching Syktyvkar, the crew was informed about the deterioration of the weather with a limited visibility of 1,500 - 2,500 meters in snow. Few radios communications issues occurred and while descending at a height of 150 meters and making a right turn, the pilot saw the second AN-2 and made a sharp turn to avoid collision when control was lost. The airplane crashed on the icy Vychegda River, about 13 km from the Syktyvkar main Station. While the aircraft was destroyed, all nine occupants were injured. About four days later, one of the passengers died from his injuries.
Probable cause:
The main cause of the accident was the dangerous convergence of the aircraft due to the extremely irresponsible attitude of the management and dispatching personnel of the Syktyvkar ATC service to fulfill published procedures related to the organization and the control of the aircraft in deteriorated weather conditions.

Crash of an Antonov AN-12PL in Katanga: 8 killed

Date & Time: Dec 6, 1969 at 0707 LT
Type of aircraft:
Operator:
Registration:
CCCP-11381
Flight Type:
Survivors:
No
Schedule:
Moscow - Syktyvkar - Katanga - Anadyr
MSN:
4 028 07
YOM:
1964
Flight number:
SU5135
Country:
Region:
Crew on board:
6
Crew fatalities:
Pax on board:
2
Pax fatalities:
Other fatalities:
Total fatalities:
8
Aircraft flight hours:
4787
Aircraft flight cycles:
1649
Circumstances:
The aircraft was completing a cargo flight from Moscow to Anadyr with intermediate stops in Syktyvkar and Katanga, carrying a load ot 9,905 kilos of oranges and 384 kilos of mail. Both legs between Moscow-Sheremetyevo, Syktyvkar and Katanga were uneventful. The crew started the approach to Katanga by night and marginal weather conditions (low clouds, snow falls and a visibility of 5 km) when he was cleared to descent to 400 meters. At high speed, flaps and undercarriage raised, the airplane banked left to 20-25° when it struck trees and crashed in flames in a wooded area located 13 km short of runway threshold. No distress call was sent from the crew prior to the accident. The aircraft was totally destroyed upon impact and all eight occupants have been killed.
Probable cause:
It is believed that the loss of control was the consequence of an excessive accumulation of ice on wings and stabs during an approach by night in severe icing conditions.

Crash of an Ilyushin II-14M near Pechora: 26 killed

Date & Time: Feb 16, 1966 at 1635 LT
Type of aircraft:
Operator:
Registration:
CCCP-52058
Flight Phase:
Survivors:
No
Schedule:
Vorkuta – Syktyvkar
MSN:
7 34 36 09
YOM:
1957
Flight number:
SU302
Country:
Region:
Crew on board:
8
Crew fatalities:
Pax on board:
18
Pax fatalities:
Other fatalities:
Total fatalities:
26
Aircraft flight hours:
17157
Circumstances:
An hour after he departed Vorkuta Airport bound for Syktyvkar, the crew reported a fire on the right engine. For undetermined reason, the crew was unable to extinguish the fire and the captain decided to reduce his altitude in an attempt to make an emergency landing. At a height of 100 meters, the right engine detached and out of control, the airplane crashed in flames in an icy pond located near the Bolchaya Vyatkina River. The aircraft was totally destroyed and all 26 occupants were killed.
Probable cause:
The right engine number five cylinder broke in flight, which resulted in the breaking of the connecting rod and the failure of the cylinders number three and seven. The destruction of these three cylinders caused the hydraulic fluid to be ejected from the crankcase through the exhaust manifold, causing a violent fire that the crew was unable to extinguish.

Crash of an Antonov AN-10A in Syktyvkar: 7 killed

Date & Time: Feb 8, 1963 at 1737 LT
Type of aircraft:
Operator:
Registration:
CCCP-11193
Flight Type:
Survivors:
No
Schedule:
Syktyvkar - Syktyvkar
MSN:
0 4 021 04
YOM:
30
Country:
Region:
Crew on board:
7
Crew fatalities:
Pax on board:
0
Pax fatalities:
Other fatalities:
Total fatalities:
7
Aircraft flight hours:
2156
Aircraft flight cycles:
1158
Circumstances:
The crew was performing a check flight at Syktyvkar Airport. During the final approach completed by night, the engines number 1, 2 & 3 flamed out in clouds and icing conditions. The crew was unable to feather the propeller that went in auto-rotation. Due to drag, the aircraft lost speed and height, banked left to an angle of 90°, struck tree tops and crashed in a wooded area located in Verkhnyaya Maksakovka, 10,2 km east of the Syktyvkar Airport. All 7 crew members were killed.
Probable cause:
The engine flame out was probably caused by the air intake iced up. The crew inexperience and the poor efficiency of the air-intake heating system were considered as contributing factors.

Crash of an Ilyushin II-14M near Syktyvkar: 23 killed

Date & Time: Jul 20, 1960 at 1230 LT
Type of aircraft:
Operator:
Registration:
CCCP-61696
Flight Phase:
Survivors:
No
Schedule:
Leningrad – Cherepovets – Syktyvkar
MSN:
1470 010 35
YOM:
1957
Flight number:
SU613
Country:
Region:
Crew on board:
4
Crew fatalities:
Pax on board:
19
Pax fatalities:
Other fatalities:
Total fatalities:
23
Aircraft flight hours:
5505
Circumstances:
The flight was performed at 3,000 meters under VFR mode above clouds. But while approaching Syktyvkar, weather conditions worsened with thunderstorm activity. The crew elected to modify his route to avoid this poor weather area when control was lost. The airplane entered a dive, lost its both wings and eventually crashed in flames in a dense wooded area located 87 km southwest of the Syktyvkar Airport. The wreckage was found 11 days later, on July 31. The airplane was completely destroyed and all 23 occupants were killed. The right wing and the right engine were found 80 meters from the main fuselage.
Probable cause:
It was determined that the loss of control was caused by the combination of strong atmospheric turbulences and vertical downdraft encountered while the aircraft was flying in a low pressure area. During the dive, excessive G loads caused the wings to detach and the aircraft became totally uncontrollable. The lack of assistance on part of the meteorology services was considered as a contributing factor as no one transmitted any information to the crew about the deterioration of the weather conditions and the presence of a thunderstorm on the flight path.

Crash of an Antonov AN-2 in Tobys

Date & Time: Jul 1, 1955 at 1454 LT
Type of aircraft:
Operator:
Registration:
CCCP-A2641
Flight Phase:
Survivors:
Yes
Schedule:
Ukhta – Syktyvkar
MSN:
1 16 473 01
YOM:
1951
Country:
Region:
Crew on board:
2
Crew fatalities:
Pax on board:
8
Pax fatalities:
Other fatalities:
Total fatalities:
0
Circumstances:
The airplane departed Ukhta Airport at 1442LT bound for Syktyvkar with eight passengers and a crew of two on board. About twelve minutes into the flight, while cruising at an altitude of 300 meters, the engine lost power and windmilled down to 400 rpm. The crew was unable to feather the propeller and the captain decided to attempt an emergency landing in a prairie when the aircraft struck trees and crashed at the edge of a forest and some 1,200 meters from a railway road. The aircraft was damaged beyond repair and all ten occupants were rescued few hours later.
Probable cause:
The engine suffered a loss of power in flight.

Crash of a Putilov Stal-2 in Slobodshikovo: 3 killed

Date & Time: Mar 10, 1935 at 1405 LT
Type of aircraft:
Operator:
Registration:
CCCP-L1170
Flight Phase:
Survivors:
No
Schedule:
Arkhangelsk – Kotlas – Syktyvkar
MSN:
170
YOM:
1934
Country:
Region:
Crew on board:
2
Crew fatalities:
Pax on board:
1
Pax fatalities:
Other fatalities:
Total fatalities:
3
Circumstances:
The airplane was completing a schedule service from Arkhangelsk to Syktyvkar with an intermediate stop in Kotlas, carrying one passenger and two crew members. The crew departed Kotlas at 1240LT on the final leg to Syktyvkar. Approaching the village of Korovinskaya, the pilot encountered sudden heavy snow falls for a period of time of about 15-20 minutes. The visibility was very poor and the pilot decided not to return and continued in such conditions. Few minutes later, while cruising in a flat attitude in white conditions, the airplane impacted ground and crashed one km southeast of Slobodshikovo. The aircraft was destroyed and all three occupants were killed.
Probable cause:
Controlled flight into terrain following the pilot's decision to continue the flight at an insufficient altitude in reduced visibility due to heavy snow falls while it would have been better to fly back to Kotlas.