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Crash of a PZL-Mielec AN-2 near Olyokminsk

Date & Time: May 21, 1981 at 1019 LT
Type of aircraft:
PZL-Mielec AN-2
Operator:
Registration:
CCCP-35198
Flight Phase:
Flight
Flight Type:
Scheduled Revenue Flight
Survivors:
Yes
Site:
Plain, Valley
Schedule:
Vitim – Lensk – Olyokminsk
MSN:
1G144-22
YOM:
1970
Location:
Olyokminsk
Republic of Yakutia (Sakha)
Country:
Russia
Region:
Asia
Crew on board:
2
Crew fatalities:
Pax on board:
7
Pax fatalities:
Other fatalities:
Total fatalities:
0
Aircraft flight hours:
11350
Circumstances:
The single engine airplane departed Lensk Airport at 0909LT on the second leg of a flight from Vitim to Olyokminsk. About an hour later, while cruising at an altitude of 1,500 meters, the engine started to vibrate and the crew decided to attempt an emergency landing. The airplane descended into trees and crashed in a wooded area located 122 northwest of Olyokminsk, bursting into flames. All nine occupants escaped uninjured while the aircraft was destroyed by fire.
Probable cause:
The engine failure was the consequence of the disintegration of the 4th cylinder intake valve.

Crash of an Antonov AN-2T in Yessey

Date & Time: May 20, 1981
Type of aircraft:
Antonov AN-2
Operator:
Registration:
CCCP-04273
Flight Phase:
Landing (descent or approach)
Flight Type:
Cargo
Survivors:
Yes
Site:
Lake, Sea, Ocean, River
MSN:
1 17 473 03
YOM:
1952
Location:
Yessey
Krasnoyarsk Krai
Country:
Russia
Region:
Asia
Crew on board:
0
Crew fatalities:
Pax on board:
0
Pax fatalities:
Other fatalities:
Total fatalities:
0
Circumstances:
The airplane was engaged in a geological support mission. While approaching Yessey Airstrip, during a fourth turn, the pilot-in-command elected to correct the roll but his reaction increased the roll to an angle of 45°. The airplane lost height and crashed on the icy Yessey lake about 5 km from the village. There were no casualties.
Probable cause:
Inappropriate roll correction from the pilot on approach caused the aircraft to bank excessively, to lose height and to crash.

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

Date & Time: May 3, 1981 at 1603 LT
Type of aircraft:
PZL-Mielec AN-2
Operator:
Registration:
CCCP-70836
Flight Phase:
Flight
Flight Type:
Spraying (Agricultural)
Survivors:
Yes
Site:
Plain, Valley
Schedule:
Voskhod - Voskhod
MSN:
1G133-39
YOM:
1972
Location:
Voskhod
Krasnodar Krai
Country:
Russia
Region:
Asia
Crew on board:
1
Crew fatalities:
Pax on board:
2
Pax fatalities:
Other fatalities:
Total fatalities:
2
Aircraft flight hours:
5424
Aircraft flight cycles:
33744
Circumstances:
Following spraying operations for the sovkhoz (state farm) of 'Runo' located in Novopokrovskaya, the pilot decided to conduct a local flight with two unauthorized passengers on board. While flying at a height of about 20-25 meters, the pilot initiated a steep left turn when the airplane went out of control and crashed in a wooded area. Both passengers were killed and the pilot was seriously injured. The aircraft was destroyed.
Probable cause:
It was determined that the pilot had not sufficient experience in such mission and he decided to conduct a local flight without any copilot on board and with two unauthorized passengers.

Crash of a PZL-Mielec AN-2TP near Lazo: 12 killed

Date & Time: Apr 28, 1981 at 1231 LT
Type of aircraft:
PZL-Mielec AN-2
Operator:
Registration:
CCCP-92864
Flight Phase:
Flight
Flight Type:
Scheduled Revenue Flight
Survivors:
No
Site:
Mountains
Schedule:
Batagay - Lazo
MSN:
1G53-16
YOM:
1965
Flight number:
SU347I
Location:
Lazo
Kamchatka Krai
Country:
Russia
Region:
Asia
Crew on board:
2
Crew fatalities:
Pax on board:
10
Pax fatalities:
Other fatalities:
Total fatalities:
12
Aircraft flight hours:
13125
Circumstances:
The single airplane departed Batagay on a schedule service to Lazo with 10 passengers and two pilots on board. En route, the crew encountered poor weather conditions with low visibility and icing conditions. While cruising in low clouds at an altitude of 860 meters, the airplane struck the slope of a mountain located in the region of Lazo. The aircraft was destroyed upon impact and all 12 occupants were killed.
Probable cause:
It was determined that weather conditions were slightly worse than forecast. The crew took the decision to continue the flight into a visibility that was below minimums when no visual contact with ground could be established. The copilot had a blood alcohol level of 1‰ which may have influenced his decisions and capabilities.

Crash of a PZL-Mielec AN-2 near Ust-Kut

Date & Time: Apr 3, 1981
Type of aircraft:
PZL-Mielec AN-2
Operator:
Registration:
CCCP-02588
Flight Phase:
Flight
Flight Type:
Scheduled Revenue Flight
Survivors:
Yes
Site:
Plain, Valley
MSN:
1G121-07
YOM:
1970
Location:
Ust-Kut
Irkutsk oblast
Country:
Russia
Region:
Asia
Crew on board:
0
Crew fatalities:
Pax on board:
0
Pax fatalities:
Other fatalities:
Total fatalities:
0
Circumstances:
The engine failed in flight, forcing the crew to attempt an emergency landing. The airplane crash landed in a field and was damaged beyond repair. There were no casualties.
Probable cause:
Engine failure in flight caused by a fuel exhaustion.

Crash of an Antonov AN-2 in Eldari: 1 killed

Date & Time: Mar 14, 1981 at 1230 LT
Type of aircraft:
Antonov AN-2
Operator:
Registration:
CCCP-01867
Flight Phase:
Takeoff (climb)
Flight Type:
Test
Survivors:
Yes
Site:
Plain, Valley
Schedule:
Eldari - Eldari
MSN:
1 153 473 07
YOM:
1960
Location:
Eldari
Kakheti
Country:
Georgia
Region:
Asia
Crew on board:
2
Crew fatalities:
Pax on board:
4
Pax fatalities:
Other fatalities:
Total fatalities:
1
Aircraft flight hours:
9653
Aircraft flight cycles:
35750
Circumstances:
The crew was engaged in a spraying mission in the region of Eldari and arrived on March 13. No flight was scheduled on March 14 so the crew decided to perform engine tests. The captain asked the copilot to give up his seat to the mechanic for the purpose of the engine test run. Three unauthorized passengers from a local farm embarked and the captain decided to takeoff despite poor weather conditions (visibility below minimums). The single engine aircraft took off at 1228LT with flaps down at 20°. During initial climb, at a height of about 25-30 meters, the airplane entered a right turn then lost height and crashed in a field located 600 meters from the point of departure. A passenger was killed while five other occupants were injured.
Probable cause:
It was determined that the captain decided to initiate a local test flight without a copilot in poor weather conditions (fog down to 50 meters and horizontal visibility down to 300 meters) without prior permission and with unauthorized passengers on board. In limited visibility, the airplane banked to the right to an angle of 30° and an excessive correction from the pilot-in-command caused the aircraft to be uncontrollable, to lose height and to crash.

Crash of an Antonov AN-24T in Kursk

Date & Time: Mar 8, 1981
Type of aircraft:
Antonov AN-24
Operator:
Registration:
CCCP-46280
Flight Phase:
Landing (descent or approach)
Flight Type:
Cargo
Survivors:
Yes
Site:
Airport (less than 10 km from airport)
Schedule:
Novosibirsk – Chelyabinsk – Kuybyshev – Kursk
MSN:
7 9 1 01 04
YOM:
1967
Location:
Kursk
Kursk oblast
Country:
Russia
Region:
Asia
Crew on board:
5
Crew fatalities:
Pax on board:
0
Pax fatalities:
Other fatalities:
Total fatalities:
0
Aircraft flight hours:
10035
Aircraft flight cycles:
7695
Circumstances:
The crew was completing a cargo flight from Novosibirsk to Kursk with intermediate stops at Chelyabinsk and Kuybyshev. Following several errors, the crew started the approach to Kursk-Vostoshny Airport with a wrong approach track. Despite the aircraft was not properly aligned on the localizer and the pilot-in-command did not have any visual contact with approach and/or runway lights, he decided to continue the approach. The airplane descended below the glide then struck trees and crashed in flames in a wooded area located 420 meters short of runway threshold and 250 meters to the left of its extended centerline. The aircraft was destroyed and all five occupants were injured.
Probable cause:
It was determined that the crew adopted a wrong approach configuration, causing the aircraft to follow a wrong approach path and descending below the decision height until it struck obstacles and crashed. The following contributing factors were reported:
- Poor crew coordination,
- Poor flight preparation,
- Crew fatigue due to multiple landings that day,
- The pilot-in-command failed to initiate a go-around,
- Lack of vertical and horizontal visibility due to low clouds, mist and drizzle.

Crash of a PZL-Mielec AN-2 near Prokhorkino: 4 killed

Date & Time: Mar 6, 1981 at 1642 LT
Type of aircraft:
PZL-Mielec AN-2
Operator:
Registration:
CCCP-35182
Flight Phase:
Flight
Flight Type:
Scheduled Revenue Flight
Survivors:
No
Site:
Plain, Valley
Schedule:
Prokhorkino – Novonikolskoye – Nazino – Aleksandrovskoye
MSN:
1G114-06
YOM:
1970
Flight number:
SU9720
Location:
Prokhorkino
Tomsk oblast
Country:
Russia
Region:
Asia
Crew on board:
2
Crew fatalities:
Pax on board:
2
Pax fatalities:
Other fatalities:
Total fatalities:
4
Aircraft flight hours:
8342
Aircraft flight cycles:
10717
Circumstances:
The single engine aircraft departed Prokhorkino at 1634LT on a service to Aleksandrovskoye with intermediate stops at Novonikolskoye and Nazino. Weather conditions were no so good with clouds, snow falls and a visibility estimated to 3-5 km. About eight minutes after takeoff, the airplane went out of control and crashed in an icy lake (the ice was about 60-70 cm thick) located 20 km northwest of Prokhorkino. The aircraft was destroyed and all four occupants were killed.
Probable cause:
The exact cause of the accident could not be determined with certainty. It is possible that the crew lost control of the airplane following a wrong interpretation of the artificial horizon while cruising in limited visibility due to snow falls. A spatial disorientation may be a factor as well.

Crash of a PZL-Mielec AN-2P near Pskov

Date & Time: Feb 21, 1981
Type of aircraft:
PZL-Mielec AN-2
Operator:
Registration:
CCCP-01722
Flight Phase:
Flight
Flight Type:
Scheduled Revenue Flight
Survivors:
Yes
Site:
Plain, Valley
MSN:
1G106-19
YOM:
1969
Location:
Pskov AFB
Pskov oblast
Country:
Russia
Region:
Asia
Crew on board:
0
Crew fatalities:
Pax on board:
0
Pax fatalities:
Other fatalities:
Total fatalities:
0
Circumstances:
Crashed in unknown circumstances after the crew got distracted. There were no casualties.

Crash of an Ilyushin II-14P in Krenkel: 2 killed

Date & Time: Feb 12, 1981 at 1200 LT
Type of aircraft:
Ilyushin II-14
Operator:
Registration:
CCCP-04188
Flight Phase:
Landing (descent or approach)
Flight Type:
Supply
Survivors:
Yes
Site:
Airport (less than 10 km from airport)
Schedule:
Myashkovo – Vorkuta – Dikson – Krenkel
MSN:
6 34 13 01
YOM:
1956
Location:
Krenkel (Heiss Island)
Arkhangelsk oblast
Country:
Russia
Region:
Asia
Crew on board:
6
Crew fatalities:
Pax on board:
7
Pax fatalities:
Other fatalities:
Total fatalities:
2
Aircraft flight hours:
27926
Aircraft flight cycles:
11225
Circumstances:
The aircraft was completing a flight from Myachkovo to the Krenkel Airstrip located on the Heiss Island (Franz-Joseph Land archipelago, Arkhangelsk oblast) with intermediate stops in Vorkuta and Dikson, carrying six crew members, seven passengers (scientits) and various equipments for a scientific team located in Krenkel. On approach at dusk, the crew twice lost visual contact with the runway lighting. Instead of initiating a go-around, the pilot-in-command decided to continue the approach when the airplane touched down in deep snow (one meter deep) about 32 metres to the left of the runway. On impact, the nose gear collapsed, the lower part of the nose was damaged and the long-range fuel tanks in the cabin broke away, hit and killed two passengers. The other 11 occupants were injured and the airplane was damaged beyond repair.
Probable cause:
It was determined that the approach configuration was wrong and that the pilot-in-command failed to react to the copilot calls. At time time of the accident, the total weight of the aircraft was 700 kilos above max gross weight. At takeoff, it was determined that the total weight was 1,650 kilos above the MTOW.
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