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Crash of an Antonov AN-12TB in Amderma: 12 killed

Date & Time: Nov 13, 1969 at 0233 LT
Type of aircraft:
Operator:
Registration:
CCCP-11376
Flight Type:
Survivors:
No
Schedule:
Moscow – Amderma – Khatanga – Magadan – Yakutsk
MSN:
4 024 06
YOM:
1964
Flight number:
SU5009
Country:
Region:
Crew on board:
9
Crew fatalities:
Pax on board:
3
Pax fatalities:
Other fatalities:
Total fatalities:
12
Aircraft flight hours:
6657
Aircraft flight cycles:
2109
Circumstances:
The aircraft was completing a cargo flight from Moscow to Yakutsk with intermediate stops in Amderma, Khatanga and Magadan, carrying a load of fruits (grapes, pears and lemons) for a total weight of 10,776 kilos. Following an uneventful flight from Sheremetyevo Airport, the crew started the approach to Amderma and was cleared to descent to 600 meters. At high speed, flaps and undercarriage retracted, the airplane was on a straight-in approach when it banked left in a 40° angle and crashed in a prairie located 15 km short of runway. The aircraft disintegrated on impact and debris were found scattered on 540 meters long and 180 meters wide. All 12 occupants were killed.
Probable cause:
The exact cause of the accident could not be determined with certainty. However, it is believed that the accident may have been caused by an excessive accumulation of ice on wings and stabs. Also, it could be possible that the loss of control was the consequence of a technical problem with the autopilot system.

Emergency landing of an Ilyushin II-18B in Tashkent

Date & Time: Nov 11, 1969
Type of aircraft:
Operator:
Registration:
CCCP-75699
Flight Phase:
Survivors:
Yes
Schedule:
Sverdlovsk – Tashkent
MSN:
18900 14 02
YOM:
1959
Country:
Region:
Crew on board:
0
Crew fatalities:
Pax on board:
0
Pax fatalities:
Other fatalities:
Total fatalities:
0
Circumstances:
On a flight from Sverdlovsk to Tashkent when the crew committed errors in handling trim tabs and autopilot, the aircraft entered a dive while flying at a height of 8,400 metres. Control was recovered by the crew at a height of some 6,600 metres. The crew managed to land safely, but the aircraft suffered structural damage during the dive with up to 2.7 g forces. Reported at LED 12SEP70 but can this be correct ? SOC 20MAY71 due to its poor technical condition.
Probable cause:
Loss of control caused by a mishandling of the trim tabs and autopilot system on part of the crew.

Crash of an Antonov AN-2 in Kazalinsk: 5 killed

Date & Time: Nov 1, 1969 at 1120 LT
Type of aircraft:
Operator:
Registration:
CCCP-43847
Flight Phase:
Survivors:
Yes
Schedule:
Aralsk – Amanutkul – Raym – Oktyabr – Kazalinsk – Frunze – Kaukey – Azhar – Kyzylorda
MSN:
1 67 473 14
YOM:
1956
Flight number:
SU643
Country:
Region:
Crew on board:
2
Crew fatalities:
Pax on board:
24
Pax fatalities:
Other fatalities:
Total fatalities:
5
Aircraft flight hours:
10570
Circumstances:
The airplane arrived in Kazalinsk at 1020LT and 12 passengers embarked. The aircraft was fully booked and ready for departure when the captain accepted, against retribution, that 12 additional passengers (11 adults and one infant) embarked as well. Some 120 kilos of cargo and 120 kilos of additional baggage were also loaded. After takeoff, while climbing to a height of 200 meters, the airplane adopted a high angle of attack when the tail stalled. Out of control, the airplane crashed 65 meters to the left of the main runway. 25 passengers were injured while one child was killed. A day later, two passengers died from their injuries and two other passengers died few days later. The aircraft was destroyed upon impact.
Probable cause:
The decision of the captain to embark 12 additional passengers was criminal and against all published procedures. Neither the copilot nor the Airport Manager complained about this decision. At the time of the accident, the total weight of the aircraft was 6,484 kilos, some 1,234 kilos above the MTOW, taking into consideration the actual flying conditions. Also, the CofG was far aft and well outside the envelope, which caused the airplane to stall from the tail during initial climb. All additional passengers did not have safety belt.

Crash of an Antonov AN-24B in Nizhnevartovsk: 24 killed

Date & Time: Oct 13, 1969 at 1727 LT
Type of aircraft:
Operator:
Registration:
CCCP-47772
Survivors:
Yes
Schedule:
Tyumen – Surgut – Nizhnevartovsk
MSN:
79901405
YOM:
1967
Flight number:
SU227
Country:
Region:
Crew on board:
4
Crew fatalities:
Pax on board:
52
Pax fatalities:
Other fatalities:
Total fatalities:
24
Aircraft flight hours:
2756
Aircraft flight cycles:
2298
Circumstances:
The crew started the approach to Nizhnevartovsk Airport by night and marginal weather conditions. Due to erroneous calculations, the aircraft was not properly aligned on the approach path and the captain decided to make a go-around. Six minutes later, he initiated a second approach. On short final, ATC asked the pilot if he has the runway in sight. As the answer was positive, the crew was cleared to land. Less than a minute later, the airplane struck tree tops, stalled and crashed in flames in a wooded area located 1,092 meters short of runway threshold. 32 occupants were injured while 24 others were killed, among them the copilot and a flight attendant.
Probable cause:
It was determined that the propellers went inadvertently into reverse when the crew activated the engine de-icing system. It was later discovered during investigations that there was a conception error on this type of aircraft between the de-icing systems and the thrust reversal systems that could activate simultaneously. Nevertheless, when control was lost, the flaps were deployed in an angle of 17° instead of 38° as prescribed, which was considered as a contributing factor.

Crash of an Antonov AN-10 in Mirny

Date & Time: Oct 12, 1969
Type of aircraft:
Operator:
Registration:
CCCP-11169
Survivors:
Yes
Schedule:
Irkutsk - Mirny
MSN:
9 4 015 01
YOM:
1959
Country:
Region:
Crew on board:
0
Crew fatalities:
Pax on board:
0
Pax fatalities:
Other fatalities:
Total fatalities:
0
Circumstances:
Upon landing on a snow covered runway at Mirny Airport, the airplane went out of control, veered off runway and collided with a trench. There were no injuries among the occupant but the aircraft was damaged beyond repair. The thickness of the snow was 1-2 cm and the crew was not aware of the presence of trench by the runway.

Crash of a PZL-Mielec AN-2 off Tiksi: 5 killed

Date & Time: Sep 26, 1969 at 2027 LT
Type of aircraft:
Operator:
Registration:
CCCP-44984
Survivors:
Yes
Schedule:
Borogon – Tiksi
MSN:
1G27-06
YOM:
1963
Flight number:
T-2
Country:
Region:
Crew on board:
3
Crew fatalities:
Pax on board:
3
Pax fatalities:
Other fatalities:
Total fatalities:
5
Aircraft flight hours:
5515
Aircraft flight cycles:
3918
Circumstances:
On final approach to Tiksi by night and poor weather conditions, while at an altitude of 300 meters and a speed of 150 km/h, the engine failed. The airplane stalled and crashed into the Tiksi bay, some 2.5 km from the runway threshold. A passenger was rescued while five other occupants were killed.
Probable cause:
The engine failed on approach to Tiksi Airport due to the failure of exhaust valves, pistons and cylinders. It was also determined that the cylinder head temperature decreased on final approach and that the carburetor was iced, causing the engine to lose power and the aircraft to suffer a reduction of aerodynamic performances.

Crash of an Ilyushin II-18V in Yakutsk

Date & Time: Sep 10, 1969 at 1525 LT
Type of aircraft:
Operator:
Registration:
CCCP-75791
Survivors:
Yes
Schedule:
Krasnoyarsk – Yakutsk
MSN:
181 0040 05
YOM:
1961
Flight number:
SU093
Country:
Region:
Crew on board:
0
Crew fatalities:
Pax on board:
0
Pax fatalities:
Other fatalities:
Total fatalities:
0
Circumstances:
Following an uneventful flight from Krasnoyarsk, the four engine aircraft landed at Yakutsk Airport. After touchdown, following a course of some 250 meters, the airplane collided with an ambulance that was crossing the main runway. Upon impact, the ambulance was totally destroyed and its three occupants were seriously injured. The airplane continued for dozen yards before coming to rest. None of the occupants were injured but the aircraft was considered as damaged beyond repair.
Probable cause:
It was determined that the ambulance's driver decided to cross the runway without prior permission from tower.

Ground accident of an Antonov AN-12B in Amderma: 5 killed

Date & Time: Sep 8, 1969 at 2147 LT
Type of aircraft:
Operator:
Registration:
CCCP-11377
Flight Phase:
Flight Type:
Survivors:
Yes
Schedule:
Moscow – Amderma – Norilsk
MSN:
4 024 07
YOM:
1964
Country:
Region:
Crew on board:
6
Crew fatalities:
Pax on board:
2
Pax fatalities:
Other fatalities:
Total fatalities:
5
Aircraft flight hours:
6471
Aircraft flight cycles:
2122
Circumstances:
The aircraft was completing a cargo flight from Moscow to Norilsk with an intermediate stop in Amderma, carrying a load of eggs for a total weight of 9,108 kilos. Following a uneventful stopover, the crew was cleared to taxi to join the holding point for takeoff. At the same time, a Soviet Air Force Tupolev TU-128 landed when the right main gear collapsed on touchdown. The Tupolev veered off runway and collided with the Antonov that was 125 meters from the main runway, causing both aircraft to burst into flames. Both aircraft were destroyed and both pilots of the Tupolev were killed as well as five crew members on board the Antonov.
Probable cause:
Failure of the right main gear of a TU-128 upon landing that caused the aircraft to veer off runway and to collide with the taxiing Antonov.

Crash of an Ilyushin II-14M near Egvekinot: 22 killed

Date & Time: Sep 1, 1969 at 1305 LT
Type of aircraft:
Operator:
Registration:
CCCP-61731
Survivors:
Yes
Site:
Schedule:
Anadyr – Egvekinot
MSN:
14600 02 05
YOM:
1956
Flight number:
SU055
Country:
Region:
Crew on board:
5
Crew fatalities:
Pax on board:
22
Pax fatalities:
Other fatalities:
Total fatalities:
22
Aircraft flight hours:
22964
Aircraft flight cycles:
14302
Circumstances:
The crew left Anadyr Airport at 0919LT bound for Egvekinot but five minutes later, encountered poor weather conditions and decided to return for a safe landing. He left again Anadyr at 1213LT in better conditions. However, while approaching Egvekinot, the pilot encountered poor visibility due to low clouds and was unable to distinguish the mountainous terrain. While descending to a height of 235 meters, the aircraft deviated from the prescribed approach path and hit the slope of Mt Dumka, passed over the top and eventually crashed in flames on the opposite slope. SAR operations were conducted and the wreckage was localised a day later. Five passengers were seriously injured while 22 other occupants were killed.
Probable cause:
The captain took the decision to continue the approach below the minimum safe altitude of 300 meters despite the visibility was low due to poor weather conditions and that he did not have any visual contact with ground. The main approach radio beacon was out of order while the reserve one was running improperly, which was considered as a contributory factor.

Crash of an Ilyushin II-18B in Moscow: 16 killed

Date & Time: Aug 26, 1969 at 2031 LT
Type of aircraft:
Operator:
Registration:
CCCP-75708
Survivors:
Yes
Schedule:
Sochi - Moscow - Norilsk
MSN:
189 0017 05
YOM:
1959
Flight number:
SU1770
Country:
Region:
Crew on board:
7
Crew fatalities:
Pax on board:
94
Pax fatalities:
Other fatalities:
Total fatalities:
16
Aircraft flight hours:
12023
Aircraft flight cycles:
4367
Circumstances:
On final approach to Moscow-Vnukovo, the flying crew was not concentrated and failed to lower the landing gear. The aircraft belly landed and slid for dozen yards before coming to rest in flames. Forty people were uninjured, 46 were wounded and 16 passengers were killed after the aircraft caught fire due to hydraulic leak and an electrical short-circuit in the cargo compartment.
Probable cause:
It was determined that the crew failed to follow the approach checklist and forgot to lower the undercarriage. The following factors were considered as contributing:
- Several propeller blades detached while contacting the runway surface, causing severe damage to the fuselage,
- A fire erupted following an electrical short-circuit in the cargo hold combined with a hydraulic leak,
- Lack of coordination on part of the cabin crew who failed to follow the safety and evacuation procedures,
- Lack of efficiency and assistance on part of the ground firefighters who arrived on the scene 15-20 minutes after the accident.