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Crash of a Lisunov LI-2 in Kazan: 6 killed

Date & Time: Jan 9, 1951 at 2248 LT
Type of aircraft:
Operator:
Registration:
CCCP-L4359
Flight Type:
Survivors:
No
Schedule:
Lyubertsy – Kazan
MSN:
184 284 06
YOM:
1
Country:
Region:
Crew on board:
5
Crew fatalities:
Pax on board:
1
Pax fatalities:
Other fatalities:
Total fatalities:
6
Aircraft flight hours:
3640
Circumstances:
The aircraft left Lyubertsy Airport at 1957LT on a cargo flight to Kazan, carrying five crew members, one passenger and a load of various goods for a total weight of 1,446 kilos. Weather conditions were poor with low visibility and snow falls. The descent to Kazan was started at 2233LT and the pilot in command obtained the permission to reduce his altitude to 1,200 and then 700 meters. While approaching Kazan, the crew encountered clouds and icing conditions when the windshield was covered by ice. At an altitude between 127 and 130 meters, the airplane hit the mast of a radio antenna. On impact, the right wing was sheared off and the aircraft crashed in a field about 250 meters further on. The airplane was destroyed and all six occupants were killed.
Probable cause:
It was determined that the crew decided to continue the approach in marginal weather and icing conditions with an ice covered windshield. Also, the ground assistance provided by ATC was insufficient and the radio antenna hit by the airplane was insufficiently lit. It appears that the 18 meters of the top of the antenna were not equipped with a light and only two lights were fixed on the rest of the mast.

Crash of an Ilyushin II-12 off Tuapse: 8 killed

Date & Time: Jan 9, 1951 at 1532 LT
Type of aircraft:
Operator:
Registration:
CCCP-L1811
Flight Phase:
Survivors:
No
Schedule:
Moscow – Krasnodar – Sochi
MSN:
9 301 33 10
YOM:
27
Country:
Region:
Crew on board:
6
Crew fatalities:
Pax on board:
2
Pax fatalities:
Other fatalities:
Total fatalities:
8
Aircraft flight hours:
1346
Circumstances:
The aircraft left Krasnodar Airport at 1505LT bound for Sochi, carrying six crew members, two passengers and a load of mail for a total of 1,007 kilos. Twenty-one minutes later, the crew obtained the permission to descend visually to 1,800 meters and then 600 meters. While cruising at an altitude of 900 meters off Tuapse, the aircraft went into clouds when it was struck by lightning. Out of control, it dove into the Black Sea and crashed about two km off the Soviet Ministry of Internal Affairs' rest house located in Tuapse. The aircraft disintegrated on impact and sank by a depth of 55 meters. Some debris were found 3 to 4 weeks later, nobody survived.
Probable cause:
It was determined that the aircraft was struck by lightning while flying in an area with thunderstorm activity. Lightning struck the left rear fuel tank and an explosion occurred while contacting fuel vapors. For unknown reason, the crew has not been informed about the presence of thunderstorm and lightning in the region of Tuapse.

Crash of a Lisunov LI-2 near Karatau: 8 killed

Date & Time: Dec 27, 1950 at 1715 LT
Type of aircraft:
Operator:
Registration:
CCCP-L4003
Flight Phase:
Flight Type:
Survivors:
No
Site:
Schedule:
Tashkent – Chardzhou – Urgench – Nukus – Dzhusaly – Turkestan – Tashkent
MSN:
184 34 06
YOM:
1942
Location:
Country:
Region:
Crew on board:
8
Crew fatalities:
Pax on board:
0
Pax fatalities:
Other fatalities:
Total fatalities:
8
Aircraft flight hours:
7072
Circumstances:
The airplane left Dzhusaly Airport at 1552LT bound for Turkestan before returning to Tashkent for the last training leg of that day. Weather conditions were marginal with clouds, icing and a visibility estimated between 4 and 10 km. Six minutes after takeoff, the crew requested the permission to climb to 2,400 meters when the aircraft started to deviate from the prescribed flight plan. After passing over Kyzylorda, the airplane was 72 km off course to the north when, at an altitude of 2,050 meters, it hit the slope of Mt Mynzhilgi located in the region of Karatau. The wreckage was found a day later about 126 meters below the summit, and all eight crew members, among them three navigators, were killed. At the time of the accident, a strong wind was blowing from the west and the crew did not realized he was off course due to the lack of visibility.

Crash of a Douglas C-47B-45-DK in Turukhansk: 2 killed

Date & Time: Nov 9, 1950 at 1623 LT
Operator:
Registration:
CCCP-L1098
Survivors:
Yes
Schedule:
Krasnoyarsk – Turukhansk – Dudinka
MSN:
16974/34235
YOM:
1945
Country:
Region:
Crew on board:
4
Crew fatalities:
Pax on board:
8
Pax fatalities:
Other fatalities:
Total fatalities:
2
Aircraft flight hours:
3858
Circumstances:
While approaching Dudinka Airport, the visibility was below minima and the crew decided to return to Turukhansk Airport. The approach was performed in severe icing conditions. On final, when the landing gear were lowered, the aircraft stalled and crashed in a field located 2 km short of runway. Two passengers were killed while all ten other occupants were rescued.
Probable cause:
It appears that the final approach was completed in severe icing conditions and that the approach speed was insufficient, which caused the aircraft to stall when the undercarriages were lowered.

Crash of an Ilyushin II-12P in Sverdlovsk: 4 killed

Date & Time: Aug 11, 1950 at 0210 LT
Type of aircraft:
Operator:
Registration:
CCCP-L1706
Survivors:
Yes
Schedule:
Khabarovsk – Omsk – Sverdlovsk – Moscow
MSN:
8 301 28 03
YOM:
0
Flight number:
SU008
Country:
Region:
Crew on board:
5
Crew fatalities:
Pax on board:
22
Pax fatalities:
Other fatalities:
Total fatalities:
4
Aircraft flight hours:
906
Circumstances:
On the approach to land at Sverdlovsk-Koltsovo Airport by night and foggy conditions, crew dropped below the glide path due to pilot error. Aircraft touched tree tops 900 metres behind the outer marker and 160 metres to the right of the runway's extended centerline and crashed in a meadow 220 metres further on (3,100 metres from the perimeter of the airfield). Two crew and two passengers were killed while all 23 other occupants were injured, one of them seriously.
Probable cause:
Wrong approach configuration, poor discipline and inappropriate decisions on part of the crew who decided to continue the approach in poor visibility. In such conditions, it would be recommended to initiate a go around procedure.

Crash of an Ilyushin II-12 in Karaganda: 25 killed

Date & Time: Jul 30, 1950 at 0544 LT
Type of aircraft:
Operator:
Registration:
CCCP-L1803
Survivors:
No
Schedule:
Alma-Ata – Karaganda – Moscow
MSN:
9 301 33 02
YOM:
31
Country:
Region:
Crew on board:
6
Crew fatalities:
Pax on board:
19
Pax fatalities:
Other fatalities:
Total fatalities:
25
Aircraft flight hours:
953
Circumstances:
Six minutes after takeoff from Karaganda Airport, while climbing, the crew reported to ATC that the left engine failed and obtained the permission to return. The pilot in command completed a circuit and started a descent. On final approach, while completing a last turn to the left at a height of 60 meters, the aircraft stalled and crashed in a huge explosion in a field located short of runway threshold. The aircraft was destroyed by impact forces and all 25 occupants were killed.
Probable cause:
Investigations were unable to determine the exact cause of the failure on the left engine. However, it was reported that the crew already encountered technical problems with the same engine a day prior to the accident but failed to report these problems to the ground maintenance.

Crash of an Ilyushin II-12P in Tbilisi: 4 killed

Date & Time: Jul 19, 1950 at 2208 LT
Type of aircraft:
Operator:
Registration:
CCCP-L1340
Flight Type:
Survivors:
Yes
Schedule:
Tbilisi - Tbilisi
MSN:
30 046
YOM:
6
Country:
Region:
Crew on board:
4
Crew fatalities:
Pax on board:
6
Pax fatalities:
Other fatalities:
Total fatalities:
4
Aircraft flight hours:
485
Circumstances:
On a circular training flight in Tbilisi-Alekseyevka at night with 6 unauthorized passengers on board when the trainee pilot deviated from the approach pattern and glide path, so the aircraft hit the top of a hill (175 metres but not indicated on the flight map) located some 4.8 km northwest of the airport, broke up, came to rest on the slope of the hill and caught fire. Three crew and a passenger were killed while all six other occupants were slightly injured.
Probable cause:
Pilot error.

Crash of a Douglas TS-62 near in Vitim: 10 killed

Date & Time: Apr 17, 1950 at 0812 LT
Operator:
Registration:
CCCP-L862
Flight Phase:
Survivors:
Yes
Schedule:
Irkutsk – Kirensk – Olyokminsk – Yakutsk
MSN:
12136
YOM:
1943
Flight number:
SU543
Country:
Region:
Crew on board:
4
Crew fatalities:
Pax on board:
16
Pax fatalities:
Other fatalities:
Total fatalities:
10
Aircraft flight hours:
3686
Circumstances:
En route from Kirensk to Olyokminsk, the left engine caught fire. The captain decided to reduce his altitude but the fire spread to the wing and reached the cabin via the heating system. Descending to an altitude of 2,000 meters, the left engine separated from the aircraft and the aircraft later crash landed in a field located 29 km southwest of Vitim and came to rest in flames. All four crew members and six passengers were able to escape while ten passengers were killed, apparently intoxicated by smoke.
Probable cause:
The cause of the in flight fire on the left engine could not be determined with certainty. However, the assumption that the fire was caused by the failure of a connection on the fuel line was not ruled out. The following factors were considered as contributory:
- the cabin crew failed to us the fire extinguisher, and also failed to close the heating system valve, which contributed to the quick propagation of the fire into the cabin,
- the captain decided to perform a steep descent that also contributed to the fire's propagation,
- the entire crew failed to give appropriate instructions to passengers prior to and after the accident, and failed to assist them for a safe evacuation, causing the death of 10 women and children.

Crash of a Lisunov LI-2 in Sverdlovsk: 3 killed

Date & Time: Dec 30, 1949 at 0530 LT
Type of aircraft:
Operator:
Registration:
CCCP-L4704
Flight Phase:
Flight Type:
Survivors:
Yes
Schedule:
Moscow – Sverdlovsk – Omsk – Vladivostok
MSN:
184 313 04
YOM:
17
Country:
Region:
Crew on board:
5
Crew fatalities:
Pax on board:
1
Pax fatalities:
Other fatalities:
Total fatalities:
3
Aircraft flight hours:
1194
Circumstances:
Few minutes after takeoff from Sverdlovsk-Koltsovo Airport, while climbing, the crew encountered severe icing conditions and the windshield went covered by ice. The pilot in command lost control of the aircraft that banked right and crashed right wing first in a field located 8,5 km southeast of the airport, near the Iset River. Two crew members and the passenger were killed while three other occupants were injured.
Probable cause:
The loss of control was the result of a series of mistakes on behalf of the crew who adopted poor flight techniques after departure. At the time of the accident, weather was marginal with severe icing conditions. It was stated that the crew was inexperienced, especially the copilot, which remains a contributing factor. The inefficiency of the windshield deicing system and a lack of crew training were also considered as contributing factors.

Crash of an Ilyushin II-12 near Savasleyka: 3 killed

Date & Time: Sep 20, 1949 at 0405 LT
Type of aircraft:
Operator:
Registration:
CCCP-L1462
Flight Phase:
Flight Type:
Survivors:
Yes
Schedule:
Moscow – Kazan – Chelyabinsk – Kostanay – Karaganda
MSN:
8 302 60 4
YOM:
0
Country:
Region:
Crew on board:
4
Crew fatalities:
Pax on board:
0
Pax fatalities:
Other fatalities:
Total fatalities:
3
Aircraft flight hours:
550
Circumstances:
The crew was performing a cargo flight from Moscow to Karaganda with intermediate stops in Kazan, Chelyabinsk and Kostanay, carrying a load of various goods consisting of an industrial furnace (765 kg), theater sets, brass tubes (1,030 kg) and electrical equipment (695 kg). While cruising by night at an altitude of 1,800 meters, the flight engineer spotted some flames coming out from the left engine. The crew made several tests and controls, the captain reduced his altitude to 1,500 meters but eventually decided to continue. About an hour later, while flying at an altitude of 3,000 meters, the left engine failed. In such conditions, the pilot was unable to maintain a safe height and the aircraft descended until it hit some tree tops and crashed in a wooded area located on the top of a hill some 22 km east of Mourom, 12 km north of Savasleyka. Three crew members were killed while a fourth was seriously injured.
Probable cause:
Failure of the left engine caused by the rupture of a flexible set on a hydraulic line, which prevented the engine to be properly lubricated. It was determined that the hose was improperly fixed during a maintenance performed during last April. Lack of visibility caused by night and a wrong decision on part of the crew who decided to continue the flight in such conditions after the first anomaly that occurred an hour prior to the accident remain contributing factors.