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

Date & Time: Dec 18, 1981 at 1421 LT
Type of aircraft:
PZL-Mielec AN-2
Operator:
Registration:
CCCP-92858
Flight Phase:
Flight
Flight Type:
Charter/Taxi (Non Scheduled Revenue Flight)
Survivors:
Yes
Site:
Plain, Valley
Schedule:
Keperveem – Chersky – Chokurdakh – Deputatsky
MSN:
1G53-10
YOM:
1965
Location:
Deputatsky
Republic of Yakutia (Sakha)
Country:
Russia
Region:
Asia
Crew on board:
3
Crew fatalities:
Pax on board:
0
Pax fatalities:
Other fatalities:
Total fatalities:
0
Aircraft flight hours:
10619
Aircraft flight cycles:
12829
Circumstances:
The crew was completing a special flight from Keperveem to Deputatsky with intermediate stops in Chersky and Chokurdakh. After takeoff from Chokurdakh, the crew encountered poor weather conditions and lost his orientation. The aircraft deviated from the prescribed route by 110 km. As the airplane ran out of fuel, the crew attempted an emergency landing when the airplane crash landed about 13 km from Deputatsky. All three crew members escaped uninjured while the aircraft was damaged beyond repair.
Probable cause:
It was determined that the crew failed to calculate properly the wind component en route from Chokurdakh to Deputatsky, causing the aircraft to be off course. Due to a longer flight than initially planed with two hours and 22 minutes, fuel reserve were low and the crew was forced to attempt an emergency landing.

Crash of a PZL-Mielec AN-2P in Ust-Kulom: 15 killed

Date & Time: Nov 26, 1981 at 1013 LT
Type of aircraft:
PZL-Mielec AN-2
Operator:
Registration:
CCCP-01808
Flight Phase:
Takeoff (climb)
Flight Type:
Scheduled Revenue Flight
Survivors:
No
Site:
Airport (less than 10 km from airport)
Schedule:
Ust-Kulom-Syktyvkar
MSN:
1G107-55
YOM:
1969
Flight number:
SU210I
Location:
Ust-Kulom
Republic of Komi
Country:
Russia
Region:
Asia
Crew on board:
3
Crew fatalities:
Pax on board:
12
Pax fatalities:
Other fatalities:
Total fatalities:
15
Aircraft flight hours:
11704
Aircraft flight cycles:
16670
Circumstances:
Few minutes after takeoff from Ust-Kulom Airport, en route to Syktyvkar, the single engine airplane collided with an Aeroflot PZL-Mielec AN-2TP registered CCCP-40564 that was inbound to Ust-Kulom on a flight from Syktyvkar. While the second airplane was able to land without further incident, the first airplane entered a dive and crashed in a field located 12 km from the airport. All 15 occupants were killed. At the time of the accident, the visibility was limited due to low clouds.
Probable cause:
It was determined that the collision was the consequence of the following:
- The crew of AN-2 CCCP-01808 failed to follow the departure route and altitude, departure procedures,
- Limited visibility due to low clouds,
- Lack of ATC assistance who failed to transmit suitable information to both crews,
- Late detection of the climbing aircraft by the inbound crew.

Crash of a Tupolev TU-154B-2 in Norilsk: 99 killed

Date & Time: Nov 16, 1981 at 1737 LT
Type of aircraft:
Tupolev TU-154
Operator:
Registration:
CCCP-85480
Flight Phase:
Landing (descent or approach)
Flight Type:
Scheduled Revenue Flight
Survivors:
Yes
Site:
Airport (less than 10 km from airport)
Schedule:
Krasnoyarsk - Norilsk
MSN:
81A480
YOM:
1981
Flight number:
SU3603
Location:
Norilsk-Alykel
Krasnoyarsk Krai
Country:
Russia
Region:
Asia
Crew on board:
7
Crew fatalities:
Pax on board:
160
Pax fatalities:
Other fatalities:
Total fatalities:
99
Aircraft flight hours:
1889
Aircraft flight cycles:
697
Circumstances:
Following an uneventful flight from Krasnoyarsk, the crew started the descent to Norilsk-Alykel Airport. At an altitude of about 600 meters and a speed of 370 km/h, the undercarriage were lowered. At a distance of 19 km from the airport, at an altitude of 500 meters and a speed of 300 km/h, flaps were deployed to an angle of 28°. At this time, the crew calculated the landing speed at 265 km/h according to flight conditions and the total weight of the aircraft. Unfortunately, this calculation was wrong and the correct speed should be 270 km/h. On short final, the airplane descended below the glide and struck the ground at a speed of 261 km/h about 470 meters short of runway threshold. It slid for about 300 meters on an icy ground before coming to rest, bursting into flames. 68 occupants were injured while 99 others were killed, among them four crew members. The aircraft was destroyed.
Probable cause:
The accident resulted from a loss of longitudinal controllability on short final due to the combination of the following factors:
- A significant reduction in the efficiency of the stabilizers after they were positioned beyond an angle of -20 °,
- An automatic reduction of power on all three engine close to idle,
- An aircraft with a forward center of gravity,
- An insufficient approach speed,
- An excessive rate of descent,
- The late recognition by the crew of an emergency situation,
- The failure of the crew to initiate a go-around procedure.

Crash of a PZL-Mielec AN-2 in Aktyubinsk: 2 killed

Date & Time: Nov 16, 1981 at 1105 LT
Type of aircraft:
PZL-Mielec AN-2
Operator:
Registration:
CCCP-28849
Flight Phase:
Takeoff (climb)
Flight Type:
Scheduled Revenue Flight
Survivors:
Yes
Site:
Airport (less than 10 km from airport)
Schedule:
Aktyubinsk – Kenkiyak
MSN:
1G05-03
YOM:
1961
Location:
Aktyubinsk
Aktobe
Country:
Kazakhstan
Region:
Asia
Crew on board:
2
Crew fatalities:
Pax on board:
12
Pax fatalities:
Other fatalities:
Total fatalities:
2
Aircraft flight hours:
14157
Aircraft flight cycles:
26889
Circumstances:
The airplane was engaged in a flight from Aktyubinsk to Kenkiyak, carrying 12 passengers and a crew of two on behalf of an oil exploration company. Rotation was completed at a speed of 80 km/h after a course of 180 meters. During initial climb, at a height of 5-7 meters, at a speed of 120 km/h, the airplane banked left then lost height and crashed 210 meters from the runway end, rolled for about 26 meters and came to rest. Two passengers were killed while 12 other occupants were seriously injured.
Probable cause:
It was determined that the loss of control during initial climb was the consequence of a weight & balance problem. Investigations revealed that the aircraft was generally used for support and other missions in the past and was flying with passengers for the first time. By a local manufacturing plant, several equipment such as radios and batteries were moved to the rear of the cabin, modifying the center of gravity that was out of the envelope, too far aft (4%). For unknown reasons, the aircraft technical documents were not modified accordingly and the crew was not aware of these modifications.

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

Date & Time: Nov 10, 1981
Type of aircraft:
PZL-Mielec AN-2
Operator:
Registration:
CCCP-92862
Flight Phase:
Landing (descent or approach)
Flight Type:
Spraying (Agricultural)
Survivors:
Yes
Site:
Plain, Valley
MSN:
1G53-14
YOM:
1965
Location:
Ukhta
Republic of Komi
Country:
Russia
Region:
Asia
Crew on board:
0
Crew fatalities:
Pax on board:
0
Pax fatalities:
Other fatalities:
Total fatalities:
0
Circumstances:
Crashed while landing in an unsuitable terrain in Ukhta. There were no casualties while the aircraft was damaged beyond repair.

Crash of a Yakovlev Yak-40 in Zheleznogorsk: 33 killed

Date & Time: Sep 18, 1981 at 1213 LT
Type of aircraft:
Yakovlev Yak-40
Operator:
Registration:
CCCP-87455
Flight Phase:
Landing (descent or approach)
Flight Type:
Scheduled Revenue Flight
Survivors:
No
Site:
Plain, Valley
Schedule:
Irkutsk - Zheleznogorsk
MSN:
9 43 12 36
YOM:
1974
Flight number:
SU652
Location:
Zheleznogorsk
Krasnoyarsk Krai
Country:
Russia
Region:
Asia
Crew on board:
4
Crew fatalities:
Pax on board:
29
Pax fatalities:
Other fatalities:
Total fatalities:
33
Aircraft flight hours:
10455
Aircraft flight cycles:
9784
Circumstances:
Following an uneventful flight from Irkutsk-Magan Airport, the crew started the descent to Zheleznogorsk-Ilimskiy Airport in relative good weather conditions with a horizontal visibility of 20 km. On final, at an altitude of 400 meters, the three engine airplane collided with a Soviet Air Force Mil Mi-8 helicopter registered CCCP-22268. Inbound from Bratsk, the helicopter was completing a training mission with seven people on board. Following the collision, both aircraft dove into the ground and crashed in a wooded and hilly terrain located about 11 km from the airport, bursting into flames. All 40 occupants in both aircraft were killed.
Probable cause:
It was determined that the collision was the consequence of a poor ATC surveillance, causing both aircraft to initiate an approach without ensuring that they each maintained a minimum separation in accordance with published procedures. This situation allowed the helicopter to cut off the approach path of the aircraft. The lack of radio communications between the three parties concerned remained a contributing factor.

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

Date & Time: Sep 16, 1981 at 1445 LT
Type of aircraft:
PZL-Mielec AN-2
Operator:
Registration:
CCCP-40523
Flight Phase:
Landing (descent or approach)
Flight Type:
Cargo
Survivors:
Yes
Site:
Airport (less than 10 km from airport)
Schedule:
Ust-Kuyga - Suordakh
MSN:
1G83-26
YOM:
1967
Location:
Suordakh
Republic of Yakutia (Sakha)
Country:
Russia
Region:
Asia
Crew on board:
2
Crew fatalities:
Pax on board:
0
Pax fatalities:
Other fatalities:
Total fatalities:
0
Circumstances:
The crew was completing a cargo flight from Ust-Kuyga to Suordakh. On final approach, the crew decided to initiate a go-around while people were on runway. The single engine airplane made a long flare then landed on a soft ground, causing the landing gear to partially collapse. Both occupants escaped uninjured while the aircraft was damaged beyond repair.
Probable cause:
Wrong decisions and incorrect actions on part of the crew while trying to make a go-around.

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

Date & Time: Sep 9, 1981
Type of aircraft:
PZL-Mielec AN-2
Operator:
Registration:
CCCP-07601
Flight Phase:
Flight
Flight Type:
Spraying (Agricultural)
Survivors:
Yes
Site:
Plain, Valley
Schedule:
Namangan - Namangan
MSN:
1G155-56
YOM:
1974
Location:
Namangan
Namangan Province (Namangan viloyati)
Country:
Uzbekistan
Region:
Asia
Crew on board:
2
Crew fatalities:
Pax on board:
0
Pax fatalities:
Other fatalities:
Total fatalities:
0
Circumstances:
The crew was completing a spraying mission when the engine failed. He was able to make an emergency landing in a field. Both occupants escaped uninjured while the aircraft was written off.
Probable cause:
Engine failure for unknown reasons.

Crash of a Yakovlev Yak-40 in Zeya: 3 killed

Date & Time: Aug 29, 1981 at 2031 LT
Type of aircraft:
Yakovlev Yak-40
Operator:
Registration:
CCCP-87346
Flight Phase:
Landing (descent or approach)
Flight Type:
Scheduled Revenue Flight
Survivors:
Yes
Site:
Airport (less than 10 km from airport)
Schedule:
Irkutsk - Chita - Zeya - Blagoveshchensk
MSN:
9 51 15 39
YOM:
1975
Flight number:
SU674
Location:
Zeya
Amur oblast
Country:
Russia
Region:
Asia
Crew on board:
5
Crew fatalities:
Pax on board:
29
Pax fatalities:
Other fatalities:
Total fatalities:
3
Circumstances:
The three engine airplane was completing flight SU674 from Irkutsk to Blagoveshchensk with intermediate stops in Chita and Zeya. While approaching Zeya Airport, the crew encountered marginal weather conditions with limited visibility (less than 2 km). On final, the GPWS warning sounded in the cockpit while the aircraft was descending below the minimum descent altitude. The pilot-in-command decided to continue the approach when the airplane struck trees and crashed in a wooded area located 350 meters short of runway threshold and 125 meters to the right of the extended centerline, bursting into flames. Two crew members and one passengers were killed while 26 other occupants were injured. Five passengers escaped uninjured.
Probable cause:
It was determined that the crew decided to continue the approach after passing the minimum descent altitude in below minimum visibility conditions. The crew failed to respond to the GPWS warning sound and to initiate a go-around despite the fact they did not establish a visual contact with the ground and runway. It was reported that weather conditions were worse than forecast in the bulletin transmitted to the crew and there were local patches of fog in the last segment of the approach path which was considered as contributing factors.
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