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Crash of a PZL-Mielec AN-2 in Yakutia

Date & Time: Jul 11, 1986 at 1145 LT
Type of aircraft:
Operator:
Registration:
CCCP-70124
Flight Phase:
Flight Type:
Survivors:
Yes
MSN:
1G136-50
YOM:
1972
Country:
Region:
Crew on board:
2
Crew fatalities:
Pax on board:
1
Pax fatalities:
Other fatalities:
Total fatalities:
0
Circumstances:
The single engine aircraft departed Vilyuysk Airport in the morning on a survey mission to prevent forest fire. One hour and 20 minutes after takeoff, the engine failed. The crew attempted an emergency landing when the aircraft crashed in a wooded area, bursting into flames. All three occupants, two pilots and one observer, were uninjured while the aircraft was destroyed by fire. The wreckage was found 195 km southwest of Zhigansk.
Probable cause:
The engine stopped in flight following the failure of the camshaft.

Crash of a PZL-Mielec AN-2 near Krasnodar

Date & Time: Jul 11, 1986
Type of aircraft:
Operator:
Registration:
CCCP-82867
Flight Phase:
Survivors:
Yes
MSN:
1G168-43
YOM:
1976
Country:
Region:
Crew on board:
0
Crew fatalities:
Pax on board:
0
Pax fatalities:
Other fatalities:
Total fatalities:
0
Circumstances:
En route, the aircraft collided with a bird that got stuck in the engine air intake, causing the engine to fail. The crew attempted an emergency landing when the aircraft crash landed in a field. There were no casualties but the aircraft was damaged beyond repair.
Probable cause:
Engine failure following an in-flight birdstrike.

Crash of a Tupolev TU-134AK near Vizinga: 54 killed

Date & Time: Jul 2, 1986 at 1027 LT
Type of aircraft:
Operator:
Registration:
CCCP-65120
Flight Phase:
Survivors:
Yes
Schedule:
Vorkuta - Syktyvkar - Moscow
MSN:
60482
YOM:
1978
Flight number:
SU2306
Country:
Region:
Crew on board:
6
Crew fatalities:
Pax on board:
86
Pax fatalities:
Other fatalities:
Total fatalities:
54
Aircraft flight hours:
13988
Aircraft flight cycles:
7989
Circumstances:
The aircraft departed Syktyvkar Airport at 0955LT bound for Moscow and continued to climb in normal weather conditions. Twelve minutes later, while cruising at an altitude of 5,600 meters, the fire alarm connected to the rear cargo compartment activated in the cockpit. The flight engineer was dispatched to the rear of the cabin to check the situation and came back less than two minutes later, confirming that smoke was spreading. Instead of declaring an emergency and informing ATC about the situation according to published procedures, the captain decided to inspect the rear of the cabin with the flight engineer. They elected to extinguish the fire but this was unfortunately not possible. They returned to the cockpit and in the meantime, the airplane continued to climb to 6,700 meters. The captain contacted ATC, declared an emergency more than 4 minutes after the fire alarm activated and was cleared to return to Syktyvkar. At this time, the aircraft position was about 140 km from Syktyvkar Airport. The captain started an emergency descent and at an altitude of 1,200 meters, flaps and gear were lowered. The crew realized it would not be able to reach Syktyvkar Airport so he attempted an emergency landing on land. In a reduced visibility due to rain falls, the aircraft struck trees, lost its both wings and crashed 340 meters further in a dense wooded area, bursting into flames. Four crew members and 34 passengers were rescued while 54 other occupants were killed. The aircraft was totally destroyed by impact forces and fire.
Probable cause:
As the aircraft was completely destroyed by fire, investigations were unable to determine the exact source of fire that started in the rear cargo compartment. It was reported that the crew tried, without success, to extinguish the fire. Also smoke spread in the cabin, asphyxing people that lost consciousness or died before the accident.

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

Date & Time: Jun 28, 1986
Type of aircraft:
Operator:
Registration:
CCCP-82860
Flight Phase:
Survivors:
Yes
Site:
MSN:
1G168-30
YOM:
1976
Country:
Region:
Crew on board:
2
Crew fatalities:
Pax on board:
2
Pax fatalities:
Other fatalities:
Total fatalities:
0
Circumstances:
En route to Grozny, weather conditions worsened and the crew decided to continue the flight under VFR rules. While cruising in clouds at low altitude, the single engine aircraft struck the slope of a mountain located in the region of Krasnodar. The aircraft was destroyed and all four occupants were slightly injured.
Probable cause:
The crew continued under VFR mode in IMC conditions.

Crash of a Tupolev TU-134A in Penza: 1 killed

Date & Time: Jun 22, 1986 at 2137 LT
Type of aircraft:
Operator:
Registration:
CCCP-65142
Flight Phase:
Survivors:
Yes
Schedule:
Penza - Simferopol
MSN:
60955
YOM:
1978
Flight number:
SU5569
Country:
Region:
Crew on board:
6
Crew fatalities:
Pax on board:
59
Pax fatalities:
Other fatalities:
Total fatalities:
1
Aircraft flight hours:
15938
Aircraft flight cycles:
10397
Circumstances:
38 seconds after the crew started the takeoff procedure, at a speed of 230 km/h and after a course of 1,450 meters, a warning sounded in the cockpit, informing the crew about the failure of the right engine. The captain took over control and initiated an emergency braking procedure. Thrust reversers were activated seven second later and the aircraft started to slow down. As the end of the runway was approaching the captain wanted to avoid any collision with the approach lights and ILS system, he veered off runway to the left. While contacting soft ground, the airplane lost its undercarriage then struck a drainage ditch and came to rest, broken in two, about 530 meters from the runway end and about 47 meters to the left of its centerline. Seven passengers were injured while 57 other occupants escaped uninjured. A passenger died from a heart attack.
Probable cause:
It was determined that the right engine was running properly at the time of the accident and that a malfunction of the warning sound system caused the alarm to activate by mistake.

Crash of a Tupolev TU-154B-2 in Moscow

Date & Time: May 21, 1986 at 1521 LT
Type of aircraft:
Operator:
Registration:
CCCP-85327
Survivors:
Yes
Schedule:
Abakan - Chelyabinsk - Moscow
MSN:
79A327
YOM:
1979
Country:
Region:
Crew on board:
10
Crew fatalities:
Pax on board:
175
Pax fatalities:
Other fatalities:
Total fatalities:
0
Aircraft flight hours:
11922
Aircraft flight cycles:
4687
Circumstances:
Following an uneventful flight from Chelyabinsk to Moscow in relative good weather conditions, the crew started the descent to Moscow-Domodedovo when the weather conditions worsened. While descending to an altitude of 3,600 meters, the aircraft entered an area of heavy rain falls and icing (a cold front was passing over Moscow at that time). The Pitot tubes became obstructed, modifying some instruments settings. The airspeed indicator fell to zero and the crew thought the aircraft was near stall conditions so he initiated an emergency descent with a rate of descent of 100 meters per second and a speed of 813 km/h. The aircraft encountered positive acceleration of 3,2 g and suffered structural damages. The crew was able to divert to Moscow-Sheremetyevo Airport where an emergency landing was completed. All 185 occupants evacuated safely and the aircraft was later declared as damaged beyond repair due to irreparable damages to the main structure (fuselage).
Probable cause:
It was determined that the crew failed to prepare the light properly at Chelyabinsk Airport and failed to follow the pre-takeoff checklist. Doing so, the crew forgot to activate the Pitot heating system. While descending to Moscow, the Pitot tube became obstructed by ice because they were not heated.

Crash of a Yakovlev Yak-40 near Khanty-Mansiysk: 5 killed

Date & Time: May 17, 1986 at 1557 LT
Type of aircraft:
Operator:
Registration:
CCCP-87928
Flight Phase:
Flight Type:
Survivors:
No
Schedule:
Khanty-Mansiysk - Khanty-Mansiysk
MSN:
9 74 19 55
YOM:
1977
Country:
Region:
Crew on board:
5
Crew fatalities:
Pax on board:
0
Pax fatalities:
Other fatalities:
Total fatalities:
5
Circumstances:
The aircraft suffered an incident at Chita Airport last April 18 when the nose gear collapsed on landing. Following repairs, the crew (three pilots and two engineers) was engaged in a local test flight out from Khanty-Mansiysk Airport. While cruising at an altitude of 6,000 meters, the ailerons were deployed to an angle of 8,5° then the aircraft turned to the right. Eight seconds later, it went out of control, overturned and entered a dive. With a rate of descent of 100 meters per second, the aircraft reached the speed of 620 km/h. With a positive acceleration of 5,25 g the left wing separated and struck the base of the tail that was torn off. The aircraft continued its uncontrolled descent until it crashed in an open field located near the Ob River, about 19 km northwest of the Khanty-Mansiysk Airport. The aircraft was destroyed and all five crew members were killed. The wreckage was found a day later.
Probable cause:
It was determined that the captain elected to perform a barrel in flight, in violation of all published procedures in force.
Final Report:

Crash of an Antonov AN-12B near Graham Bell Island

Date & Time: May 3, 1986
Type of aircraft:
Operator:
Registration:
CCCP-12962
Flight Type:
Survivors:
Yes
MSN:
9 3 464 06
YOM:
1969
Country:
Region:
Crew on board:
5
Crew fatalities:
Pax on board:
0
Pax fatalities:
Other fatalities:
Total fatalities:
0
Aircraft flight hours:
26140
Aircraft flight cycles:
9696
Circumstances:
The crew was completing a cargo/supply mission to local scientists based in the Franz-Josef Archipelago. On approach to Ledovaya Baza airfield located about 53 km north of the Graham Bell Island, the crew encountered whiteout conditions when the aircraft crashed short of runway and came to rest. All five crew members escaped uninjured and the aircraft was repairable. A team was dispatched to recover the plane and on May 13, while trying to get it out from his position, the aircraft went through the ice and sank.

Crash of a Yakovlev Yak-40 in Chita

Date & Time: Apr 18, 1986
Type of aircraft:
Operator:
Registration:
CCCP-87301
Survivors:
Yes
MSN:
9 32 17 28
YOM:
1973
Country:
Region:
Crew on board:
5
Crew fatalities:
Pax on board:
27
Pax fatalities:
Other fatalities:
Total fatalities:
0
Circumstances:
Upon landing at Chita-Kadala Airport, the right main landing gear collapsed. This caused the right wing to struck the ground and the aircraft slid several yards then veered off runway to the right and came to rest. While all 32 occupants were uninjured, the aircraft was damaged beyond repair.
Probable cause:
The right main landing gear collapsed upon landing after the kingpin arm of the folding brace mount failed due to manufacturing defect.