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Crash of a PZL-Mielec AN-2TP near Ukhta

Date & Time: Dec 17, 1970
Type of aircraft:
Operator:
Registration:
CCCP-41288
Flight Phase:
Survivors:
Yes
MSN:
1G64-03
YOM:
1965
Country:
Region:
Crew on board:
0
Crew fatalities:
Pax on board:
0
Pax fatalities:
Other fatalities:
Total fatalities:
0
Circumstances:
En route, the pilot was forced to attempt an emergency landing following an engine failure. The aircraft crash landed near Ukhta and was damaged beyond repair. There were no casualties.
Probable cause:
Engine failure in flight.

Crash of a PZL-Mielec AN-2R in Tambov

Date & Time: Nov 29, 1970
Type of aircraft:
Operator:
Registration:
CCCP-25611
Flight Phase:
Survivors:
Yes
MSN:
1G61-37
YOM:
1965
Country:
Region:
Crew on board:
0
Crew fatalities:
Pax on board:
0
Pax fatalities:
Other fatalities:
Total fatalities:
0
Circumstances:
While completing a steep turn at low height, the pilot lost control of the aircraft that stalled and crashed in a field. There were no casualties.

Crash of a Lisunov LI-2T in Leshukonskoye

Date & Time: Oct 16, 1970
Type of aircraft:
Operator:
Registration:
CCCP-84771
Flight Phase:
Flight Type:
Survivors:
Yes
MSN:
184 340 02
YOM:
1949
Country:
Region:
Crew on board:
0
Crew fatalities:
Pax on board:
0
Pax fatalities:
Other fatalities:
Total fatalities:
0
Circumstances:
Damaged beyond repair on takeoff from Leshukonskoye with the MTOW exceeded and the center of gravity being out of the envelope (too far aft). Crashed shortly after liftoff and came to rest into a ravine. All occupants survived while the aircraft was damaged beyond repair.
Probable cause:
Overweight.

Crash of an Ilyushin II-18V in Simferopol

Date & Time: Oct 16, 1970
Type of aircraft:
Operator:
Registration:
CCCP-75578
Survivors:
Yes
MSN:
185 0081 03
YOM:
1965
Country:
Region:
Crew on board:
0
Crew fatalities:
Pax on board:
0
Pax fatalities:
Other fatalities:
Total fatalities:
0
Circumstances:
An engine failed during flight and the crew was cleared to divert to Simferopol Airport for an emergency landing. After touchdown, the airplane overran and came to rest. There were no casualties while the aircraft was damaged beyond repair.
Probable cause:
Engine failure in flight.

Crash of a PZL-Mielec AN-2R near Chernivtsi

Date & Time: Oct 14, 1970
Type of aircraft:
Operator:
Registration:
CCCP-02833
Flight Phase:
Survivors:
Yes
MSN:
1G54-38
YOM:
1965
Country:
Region:
Crew on board:
0
Crew fatalities:
Pax on board:
0
Pax fatalities:
Other fatalities:
Total fatalities:
0
Circumstances:
The crew encountered below-minima weather conditions and elected to make an emergency landing near Chernivtsi when the aircraft crashed. There were no casualties.

Crash of an Antonov AN-12B in Mys-Kamennyy: 8 killed

Date & Time: Oct 1, 1970 at 1927 LT
Type of aircraft:
Operator:
Registration:
CCCP-11031
Flight Type:
Survivors:
No
Schedule:
Mys-Kamennyy - Tyumen
MSN:
7 3 450 03
YOM:
1967
Country:
Region:
Crew on board:
7
Crew fatalities:
Pax on board:
1
Pax fatalities:
Other fatalities:
Total fatalities:
8
Aircraft flight hours:
3637
Aircraft flight cycles:
1768
Circumstances:
After delivering various equipment for a local oil exploitation company, the crew was returning to Tyumen and departed Mys-Kamennyy Airport at 1911LT in snow showers reducing the visibility to 1,8 km. During initial climb, the crew was cleared to climb to 6,600 meters when four minutes later, the captain declared an emergency and stated that both left engines failed. He was cleared to fly back to Mys-Kamennyy Airport and started a return circuit. At a distance of 18 km from the airfield, he reported runway in sight and lowered the gear shortly later then reduced his altitude to 250 meters at a distance of eight km. At five km, he reported that the aircraft was losing altitude when he was instructed to turn right. Shortly later, at a speed of 220 km/h, the airplane crashed in an icy swamp located 2,2 km short of runway and 450 meters to the left of its extended centerline. The aircraft was destroyed and all eight occupants were killed.
Probable cause:
Investigations were unable to determine the exact cause of the failure of both left engines. Nevertheless, the assumption that this was caused by the presence of ice crystals or pellets clogging a fuel line or a fuel filter was not ruled out as well as a valve failure. Poor weather conditions were considered as a contributing factor.

Crash of an Antonov AN-2T in Izhevsk

Date & Time: Sep 27, 1970
Type of aircraft:
Operator:
Registration:
CCCP-35417
Survivors:
Yes
MSN:
1133 473 15
YOM:
1960
Country:
Region:
Crew on board:
0
Crew fatalities:
Pax on board:
0
Pax fatalities:
Other fatalities:
Total fatalities:
0
Circumstances:
On final approach to Izhevsk Airport, the aircraft stalled and crashed in an open field. All occupants were rescued while the aircraft was damaged beyond repair.
Probable cause:
The single engine aircraft stalled on final approach due to an insufficient speed caused by a pilot error.

Crash of an Antonov AN-2 near Bulbukhta: 1 killed

Date & Time: Sep 21, 1970
Type of aircraft:
Operator:
Registration:
CCCP-02195
Flight Phase:
Flight Type:
Survivors:
Yes
Site:
Schedule:
Perevoz – Bulbukhta
MSN:
1123 473 02
YOM:
1959
Country:
Region:
Crew on board:
2
Crew fatalities:
Pax on board:
1
Pax fatalities:
Other fatalities:
Total fatalities:
1
Aircraft flight hours:
7840
Circumstances:
While on a cargo flight from Perevoz to Bulbukhta with supplies for the mine Dalne-Taiginski, the crew encountered below-minima weather conditions (snowfall and poor visibility). As the pilot failed to return, the airplane entered clouds and crashed at a height of 1,400 metres into the rocky slope of a mountain (1,439 metres high) located 10 km SSW of Bulbukhta, caught fire and burnt out. Both pilots were injured while the sole passenger was killed. Rescue team reached the crash site a day later.
Probable cause:
Controlled flight into terrain.

Crash of a PZL-Mielec AN-2R in Almalyk: 2 killed

Date & Time: Sep 5, 1970 at 0805 LT
Type of aircraft:
Operator:
Registration:
CCCP-28952
Flight Phase:
Survivors:
No
Schedule:
Almalyk - Almalyk
MSN:
1G09-12
YOM:
1961
Country:
Region:
Crew on board:
2
Crew fatalities:
Pax on board:
0
Pax fatalities:
Other fatalities:
Total fatalities:
2
Aircraft flight hours:
8678
Aircraft flight cycles:
7375
Circumstances:
During a crop-spraying flight for the kolkhoz (collective farm) im. Kalinina in the Buka district of the Tashkent region (Uzbekistan), while flying at a height of 10 meters, the single engine airplane collided with a high-voltage power line located between the villages of Dzharkishlak and Kashka (near Almalyk). Out of control, it crashed in a cotton field 94 metres further on and nosed over. The captain was killed instantly while the copilot died while being transferred to the hospital. It was determined that the accident occured while the crew was spraying a field which has not to be sprayed.
Probable cause:
Lack of discipline on part of the crew who failed to realize he was flying at an insufficient altitude and failed to locate the high-voltage power line.

Crash of a Yakovlev Yak-40 on Mt Airy Tash: 21 killed

Date & Time: Sep 3, 1970 at 2126 LT
Type of aircraft:
Operator:
Registration:
CCCP-87690
Flight Phase:
Survivors:
No
Site:
Schedule:
Frunze - Khujand
MSN:
9 91 05 03
YOM:
1969
Flight number:
SH-4
Country:
Region:
Crew on board:
3
Crew fatalities:
Pax on board:
18
Pax fatalities:
Other fatalities:
Total fatalities:
21
Aircraft flight hours:
1020
Aircraft flight cycles:
1344
Circumstances:
The airplane departed Frunze Airport, Kirghizistan, at 2024LT bound to Leninabad, Tajikistan, carrying 18 passengers and a crew of three. Weather conditions were considered as good and the crew reached the assigned altitude of 5,700 meters. En route, the crew failed to realize the airplane deviated from the prescribed flight path to the west and informed ATC he passed over the cities of Namangan and Kokand. At 2121LT, ATC based at Leninabad cleared the crew to descent to 3,300 meters then 2,100 meters without knowing the exact position of the airplane. By night, at a speed of 500 km/h, the airplane struck the slope of Mt Airy Tash (2,300 meters high) located about 90 km northeast of Leninabad. The airplane disintegrated on impact and all 21 occupants were killed. First accident involving a Yak-40.
Probable cause:
Poor flight planning, erroneous in-flight decisions and navigation errors on part of the flying crew caused the aircraft to be off-course at the time of the accident, resulting in a controlled flight into terrain. The following contributing factors were reported:
- Lack of ATC assistance who failed to properly check the exact position of the aircraft before clearing the crew to descent to 2,100 meters over mountains terrain,
- ATC failed to use properly the different navaids, poor ATC coverage,
- Both pilots were relatively inexperienced on this type of aircraft as they were recently qualified on Yak-40 type,
- Lack of experience in IFR flight and by night,
- Despite the fact that the captain had already been disciplined for serious violations of flight rules, he had recently been allowed to fly with passengers on night flights on this type of aircraft.