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Crash of an Ilyushin II-12P in Kazan: 1 killed

Date & Time: Apr 30, 1953 at 2137 LT
Type of aircraft:
Operator:
Registration:
CCCP-L1777
Survivors:
Yes
Schedule:
Moscow – Kazan
MSN:
9 301 31 14
YOM:
24
Flight number:
SU035
Country:
Region:
Crew on board:
5
Crew fatalities:
Pax on board:
18
Pax fatalities:
Other fatalities:
Total fatalities:
1
Circumstances:
The aircraft departed Moscow-Vnukovo at 1911LT and continued under VFR at an altitude of 1,200 meters until Kazan. The crew obtained the permission to descent to Kazan and reduced his altitude to 600 and then 300 meters. During 3 to 4 minutes, the aircraft was flying along the Volga River at an altitude of 300 meters when the crew heard a noise and both engines lost power simultaneously. In the mean time, fire erupted from the exhaust pipe and the crew elected to activate the fire extinguisher system on both engines but without success. The captain reduced his altitude in an attempt to make an emergency landing on the Volga River. The airplane crash landed on the water and eventually came to rest near the bank. 22 occupants were able to evacuate the cabin while a passenger died from drowning. The aircraft sank to a depth of 18 meters.
Probable cause:
It was determined that the aircraft collided, at an altitude of 300 meters, with several ducks. A duck hit the left engine while a second hit the top part of the cockpit, just above the windshield. The impact damaged the upper side of the flight deck and a short-circuit occurred on the magneto switch, causing both engines to stop. The crew elected to feather both propellers but this was not possible because the generator did not provide sufficient power at that time.

Crash of an Ilyushin II-12 in Kazan: 6 killed

Date & Time: Jan 23, 1953 at 2037 LT
Type of aircraft:
Operator:
Registration:
CCCP-L1435
Flight Phase:
Flight Type:
Survivors:
No
Schedule:
Novosibirsk – Kazan – Moscow
MSN:
30267
YOM:
31
Flight number:
SU022
Country:
Region:
Crew on board:
6
Crew fatalities:
Pax on board:
0
Pax fatalities:
Other fatalities:
Total fatalities:
6
Aircraft flight hours:
1288
Circumstances:
The crew was completing the cargo flight SU022 from Novosibirsk to Moscow with an intermediate stop in Kazan, carrying a crew of six and a load of wire coils, electric engines and radio components. Shortly after takeoff from Kazan Airport, while climbing to a height of 150 meters, the aircraft was hit on its empannage by the left engine of an Aeroflot Lisunov LI-2 that was trying to land at Kazan Airport. On a cargo flight from Leningrad to Sverdlovsk with intermediate stops in Moscow-Bykovo Airport and Kazan, the Lisunov LI-2 was registered CCCP-L4582 and was was carrying a crew of five and a load of six brass panels weighing 155 kilos each and a batch of capacitors. Following the collision, both aircraft dove into the ground and crashed in a snow covered field located three km southwest of the airport. Both aircraft were destroyed and all eleven crew members were killed.
Probable cause:
It was determined that the collision was the result of a series of omissions on part of the ATC based at Kazan Airport who failed to coordinate properly the radar coverage and failed to assist the crew adequately. The ATC in charge of the approach instructed the crew of the Lisunov to descend to 300 meters instead of the 900 meters as mentioned in the approach procedures. Due to poor weather conditions that reduced the visibility below minimas, it would be more appropriate that ATC postponed the departure of the Ilyushin II-12 or instructed the crew of the Lisunov LI-2 to follow a holding circuit or to divert to another airport. It was confirmed that both flying crew did not bear any responsibilities in this tragedy.

Crash of a Lisunov LI-2 in Kazan: 5 killed

Date & Time: Jan 23, 1953 at 2037 LT
Type of aircraft:
Operator:
Registration:
CCCP-L4582
Flight Type:
Survivors:
No
Schedule:
Leningrad – Moscow – Kazan – Sverdlovsk
MSN:
184 304 04
YOM:
1951
Country:
Region:
Crew on board:
5
Crew fatalities:
Pax on board:
0
Pax fatalities:
Other fatalities:
Total fatalities:
5
Aircraft flight hours:
3705
Circumstances:
The crew was completing a cargo flight from Leningrad to Sverdlovsk with intermediate stops in Moscow-Bykovo Airport and Kazan, with a load of six brass panels weighing 155 kilos each and a batch of capacitors. The descent to Kazan was started by night and poor weather conditions with heavy snow falls, reducing the visibility down to zero. The crew obtained the permission to descent to 1,800, 1,200 and 600 meters and was unable to locate the runway. Guided by ATC, the aircraft descended to the altitude of 150 meters when the aircraft hit with its left engine the empennage of an Aeroflot Ilyushin II-12. Registered CCCP-L1435, this second aircraft was performing the cargo flight number SU022 from Novosibirsk to Moscow with an intermediate stop in Kazan, carrying a crew of six and a load of wire coils, electric engines and radio components. Following the collision, both aircraft dove into the ground and crashed in a snow covered field located three km southwest of the airport. Both aircraft were destroyed and all eleven crew members were killed.
Probable cause:
It was determined that the collision was the result of a series of omissions on part of the ATC based at Kazan Airport who failed to coordinate properly the radar coverage and failed to assist the crew adequately. The ATC in charge of the approach instructed the crew of the Lisunov to descend to 300 meters instead of the 900 meters as mentioned in the approach procedures. Due to poor weather conditions that reduced the visibility below minimas, it would be more appropriate that ATC postponed the departure of the Ilyushin II-12 or instructed the crew of the Lisunov LI-2 to follow a holding circuit or to divert to another airport. It was confirmed that both flying crew did not bear any responsibilities in this tragedy.

Crash of a Lisunov LI-2T near Yeniseysk: 3 killed

Date & Time: Dec 4, 1952 at 1752 LT
Type of aircraft:
Operator:
Registration:
CCCP-L4661
Flight Phase:
Survivors:
Yes
Schedule:
Dudinka – Yeniseysk – Krasnoyarsk
MSN:
46 01
YOM:
11
Flight number:
SU688
Country:
Region:
Crew on board:
5
Crew fatalities:
Pax on board:
14
Pax fatalities:
Other fatalities:
Total fatalities:
3
Aircraft flight hours:
2670
Circumstances:
The airplane left Yeniseysk Airport at 1655LT bound for Krasnoyarsk. Thirty minutes later, while cruising at an altitude of 1,800 meters by night and in good weather conditions, the crew encountered technical problems with the left propeller that was over speeding. For unknown reason, the crew was unable to feather the propeller and took the decision to return to Yeniseysk. Due to drag, the aircraft lost height and thirty minutes later, at a speed of 130 km/h, it hit tree tops and crashed in a wooded area located 25 km south of Yeniseysk Airport. Three passengers were killed while 16 other occupants were injured. The aircraft was destroyed.
Probable cause:
Failure of the pressure switch on the left-hand drive regulator in flight, which caused the propeller to overspeed. A contributory factor was the crew who failed to set the nominal mode of operation on the right engine immediately after the start of the descent, using full power on the right engine with delay, which caused the aircraft to lose altitude rapidly. Despite good visibility due to moonlight, the crew failed to attempt an emergency belly landing in a suitable terrain.

Crash of a Douglas TS-62 in Skvoritsy: 7 killed

Date & Time: Oct 5, 1952 at 1602 LT
Type of aircraft:
Operator:
Registration:
CCCP-L1055
Flight Phase:
Survivors:
No
Schedule:
Leningrad – Minsk
MSN:
16973/34233
YOM:
1945
Flight number:
SU381
Country:
Region:
Crew on board:
4
Crew fatalities:
Pax on board:
3
Pax fatalities:
Other fatalities:
Total fatalities:
7
Aircraft flight hours:
4042
Circumstances:
The TS-62 took off from Leningrad-Shosseynaya Airport and its crew received the permission to climb to the altitude of 2,700 meters via the corridor number two. While climbing into clouds, the airplane collided with an Aeroflot Ilyushin II-12 that was approaching the same Airport. Inbound from Minsk, the II-12 was registered CCCP-L1328 and was carrying 19 passengers and a crew of five. Its pilot obtained the permission from ATC to descend to the altitude of 1,200 meters via the same corridor number two. At the altitude of 1,200 meters, both aircraft collided, dove into the ground and crashed in a field located near the village of Skvoritsy, about 23 km southwest of Leningrad-Shosseynaya Airport. Both wreckage were found 1,200 meters from each other and all 31 occupants were killed.
Probable cause:
It was determined that the collision was caused by an error on part of the ATC services. Despite the fact that both aircraft were tracked on radar screens, ATC based at Leningrad-Shosseïnaya Airport failed to take appropriate actions to ensure a minimum safe separation between both airplanes and failed to realize that they were flying in the same corridor in an opposite direction and at the same altitude. Investigations revealed that the collision was the result of successive errors on part of the ATC who failed to ensure an efficient radar surveillance and transmitted to both crews inappropriate instructions that led both aircraft on the same track.

Crash of an Ilyushin II-12 in Skvoritsy: 24 killed

Date & Time: Oct 5, 1952 at 1602 LT
Type of aircraft:
Operator:
Registration:
CCCP-L1328
Survivors:
No
Schedule:
Minsk – Leningrad
MSN:
30 054
YOM:
30
Flight number:
SU376
Country:
Region:
Crew on board:
5
Crew fatalities:
Pax on board:
19
Pax fatalities:
Other fatalities:
Total fatalities:
24
Aircraft flight hours:
2283
Circumstances:
The crew was approaching Leningrad-Shosseynaya Airport and obtained the permission by ATC to descend to the altitude of 1,200 meters via corridor number two. While flying into clouds, the airplane collided with an Aeroflot Douglas TS-62 registered CCCP-L1055 that was performing flight SU381 to Minsk with seven people on board. It just took off from the same airport and its crew received the permission to climb to the altitude of 2,700 meters via the same corridor number two. At the altitude of 1,200 meters, both aircraft collided, dove into the ground and crashed in a field located near the village of Skvoritsy, about 23 km southwest of Leningrad-Shosseynaya Airport. Both wreckage were found 1,200 meters from each other and all 31 occupants were killed.
Probable cause:
It was determined that the collision was caused by an error on part of the ATC services. Despite the fact that both aircraft were tracked on radar screens, ATC based at Leningrad-Shosseïnaya Airport failed to take appropriate actions to ensure a minimum safe separation between both airplanes and failed to realize that they were flying in the same corridor in an opposite direction and at the same altitude. Investigations revealed that the collision was the result of successive errors on part of the ATC who failed to ensure an efficient radar surveillance and transmitted to both crews inappropriate instructions that led both aircraft on the same track.

Crash of a Lisunov LI-2 near Belogorsk: 7 killed

Date & Time: Sep 28, 1952
Type of aircraft:
Operator:
Registration:
CCCP-L4673
Flight Phase:
Flight Type:
Survivors:
No
Site:
Schedule:
Khabarovsk – Krasnoyarsk – Novosibirsk – Tashkent
MSN:
66 05
YOM:
1949
Country:
Region:
Crew on board:
6
Crew fatalities:
Pax on board:
1
Pax fatalities:
Other fatalities:
Total fatalities:
7
Circumstances:
The aircraft was completing a flight from Khabarovsk to Tashkent with intermediate stops in Krasnoyarsk and Novosibirsk, carrying a crew of six and one passenger, a Soviet Army Officer. The airplane left Krasnoyarsk Airport at 1822LT bound for Novosibirsk. En route, the crew encountered poor weather conditions with low clouds and rain falls. While cruising at an altitude of 1,500 meters in the clouds, the crew encountered icing conditions and obtained the permission to descend to 900 meters. As the aircraft failed to arrive in Novosibirsk, SAR operations were conducted but eventually suspended few days later as no trace of the aircraft nor the seven occupants was found. The wreckage was found 15 years later, in 1967, on the northwestern slope of Mt Kuznetsky Alatau (1,037 meters high) located in the region of Belogorsk. According to investigations, it appears the aircraft hit tree tops, flew about 70 meters and crashed in flames in a wooded area at an altitude of 710 meters. The airplane disintegrated on impact and was consumed by a post crash fire. All seven occupants were killed.
Probable cause:
It is believed that the accident occurred when the crew was attempting an emergency landing due to severe icing conditions.

Crash of a Lisunov LI-2 in Riga: 4 killed

Date & Time: Jul 19, 1952 at 2302 LT
Type of aircraft:
Operator:
Registration:
CCCP-L4197
Flight Phase:
Flight Type:
Survivors:
No
Schedule:
Riga - Riga
MSN:
184 207 02
YOM:
1945
Country:
Region:
Crew on board:
4
Crew fatalities:
Pax on board:
0
Pax fatalities:
Other fatalities:
Total fatalities:
4
Aircraft flight hours:
5948
Circumstances:
The crew was performing a local night training flight at Riga-Spilve Airport. On final approach, the instructor asked the pilot-in-command to make a go around. The aircraft climbed to a height of about 60 meters and then turn to the left, stalled and crashed 250 meters from the tower. All 4 crew members were killed.
Probable cause:
The exact cause of the accident could not be determined with certainty. However, it is reported that both engines flamed out during the initial climb, probably following a mishandling of the fuel management system on part of the flying crew. At the time of the accident, the connected fuel tank has 54 liters fuel only, which was considered as insufficient.

Crash of a Lisunov LI-2 near Khandyga: 4 killed

Date & Time: May 3, 1952 at 0814 LT
Type of aircraft:
Operator:
Registration:
CCCP-L4602
Flight Phase:
Flight Type:
Survivors:
No
Site:
Schedule:
Yakutsk – Khandyga – Allaikha
MSN:
46 07
YOM:
0
Country:
Region:
Crew on board:
4
Crew fatalities:
Pax on board:
0
Pax fatalities:
Other fatalities:
Total fatalities:
4
Aircraft flight hours:
2284
Circumstances:
On the leg from Yakutsk to Khandyga of a cargo flight from Yakutsk to Allaikha when the favorable weather forecast turned out not to be in line with reality. The aircraft deviated from the prescribed flight path due to strong winds, entered clouds and crashed at a height of some 1,200 metres into the northwestern slope of the first mountain of the Verkhoyanski khrebet ridge located some 95 km northwest of Khandyga and fell down into a ravine about 120 meters further on. All 4 crew were killed. The wreckage was found eight days later, on 11 of May.
Probable cause:
The weather report transmitted to the crew before departure did not reflect the reality and the weather conditions were worse than predicted. Nevertheless, the crew failed to demonstrate discipline and mismanaged the flight properly and according to the published procedures.

Crash of an Ilyushin II-12 in Novosibirsk: 8 killed

Date & Time: Apr 25, 1952
Type of aircraft:
Operator:
Registration:
CCCP-L1312
Flight Phase:
Flight Type:
Survivors:
Yes
Schedule:
Novosibirsk - Novosibirsk
MSN:
30018
YOM:
14
Country:
Region:
Crew on board:
9
Crew fatalities:
Pax on board:
0
Pax fatalities:
Other fatalities:
Total fatalities:
8
Aircraft flight hours:
1923
Circumstances:
The crew left Novosibirsk-Severny Airport at 1400LT for a local training flight. At that time, weather conditions were poor with overcast at 200 meters, rain showers, visibility less than three km and icing conditions in clouds. While flying into the clouds at an altitude estimated between 1,200 and 1,250 meters with the left engine inoperative, the pilot-in-command lost control of the airplane that turned to the left, dove into the ground and crashed in flames few km from the airport. A crew member was injured while eight other occupants were killed.
Probable cause:
The exact cause of the accident could not be determined with certainty. However, it was reported that the left engine was inoperative at impact and that the propeller was feathered, a configuration apparently intended by the crew and part of the training program.