Crash of an Ilyushin II-18V in Leningrad: 6 killed

Date & Time: Dec 31, 1970 at 1637 LT
Type of aircraft:
Operator:
Registration:
CCCP-75773
Flight Phase:
Survivors:
Yes
Schedule:
Leningrad - Yerevan
MSN:
181 0036 03
YOM:
1961
Flight number:
SU3012
Country:
Region:
Crew on board:
6
Crew fatalities:
Pax on board:
78
Pax fatalities:
Other fatalities:
Total fatalities:
6
Aircraft flight hours:
13760
Aircraft flight cycles:
6733
Circumstances:
The takeoff from Leningrad-Shosseynaya Airport was performed in low clouds and snow falls. After liftoff at a speed of 250 km/h, the airplane climbed to a height of 30-50 meters when it adopted an excessive nose-up attitude and banked left and right. In a high angle of attack, it continued on a distance of 5,300 meters when it lost height, causing the base of the tail to struck the ground. Out of control, it crashed at a speed of 200 km/h in a snow covered field, rolled for about 210 meters and came to rest 290 meters to the right of the extended centerline. Five crew members and a policeman, Major by the Interior Ministry of the Republic of Armenia were killed while 26 other occupants were injured, some of them seriously. 54 other occupants escaped uninjured. The aircraft was destroyed.
Probable cause:
Due to poor flight preparation and lack of coordination, the crew failed to follow the pre-takeoff checklist and failed to deploy the flaps prior to departure, according to the published procedures. It appears that the crew precipitated the takeoff manoeuvre, which was considered as a contributing factor.

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 an Antonov AN-12 in Ivanovo: 7 killed

Date & Time: Oct 28, 1970
Type of aircraft:
Operator:
Flight Type:
Survivors:
No
Schedule:
Ivanovo - Ivanovo
Country:
Region:
Crew on board:
7
Crew fatalities:
Pax on board:
0
Pax fatalities:
Other fatalities:
Total fatalities:
7
Circumstances:
The crew was engaged in a local training mission at Ivanovo-Severny Air Base. On final approach by night and poor weather conditions, the captain decided to make a go-around when the airplane lost height and crashed. The airplane was destroyed and all seven crew members were killed.
Probable cause:
It is believed that the aircraft's speed was insufficient at the time the crew initiated a go-around procedure.

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 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 an Ilyushin II-18V in Yuzhno-Sakhalinsk

Date & Time: Aug 23, 1970
Type of aircraft:
Operator:
Registration:
CCCP-75823
Survivors:
Yes
Schedule:
Moscow – Chelyabinsk – Krasnoyarsk – Chita – Yuzhno-Sakhalinsk
MSN:
182 0049 02
YOM:
1962
Flight number:
SU017
Country:
Region:
Crew on board:
0
Crew fatalities:
Pax on board:
0
Pax fatalities:
Other fatalities:
Total fatalities:
0
Circumstances:
The crew started the approach to Yuzhno-Sakhalinsk by night and heavy rain falls. On short final, the captain realized he was well above the glide so he decided to increase the rate of descent. The airplane struck the runway surface nose first at a speed of 230 km/h and with a positive acceleration of 2,8 g. It bounced then landed a second time with an acceleration of 3,8 g. Upon impact, the nose gear was torn off, the engine number one detached and both wings were bent. Out of control, the airplane slid for several yards before coming to rest. All occupants escaped uninjured while the aircraft was damaged beyond repair.
Probable cause:
Wrong approach configuration on part of the pilot-in-command. Poor crew coordination and poor weather conditions were considered as contributing factors.

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

Date & Time: Jul 25, 1970
Type of aircraft:
Operator:
Registration:
CCCP-41295
Flight Phase:
Survivors:
Yes
MSN:
1G64-10
YOM:
1965
Country:
Region:
Crew on board:
0
Crew fatalities:
Pax on board:
0
Pax fatalities:
Other fatalities:
Total fatalities:
0
Circumstances:
Following an engine failure, the aircraft stalled and crashed near Ukhta. There were no casualties.
Probable cause:
Engine failure in flight.