Republic of Tatarstan

Operator:

Registration:

CCCP-70219

Flight Phase:

Flight Type:

Survivors:

Site:

Schedule:

Bugulma – Menzelinsk – Aktanysh – Izhevsk

MSN:

1G138-37

YOM:

1972

Flight number:

SU1535

Location:

Bugulma

Country:

Region:

Crew on board:

Crew fatalities:

Pax on board:

Pax fatalities:

Other fatalities:

Total fatalities:

Aircraft flight hours:

3561

Circumstances:

The departure from Bugulma was scheduled at 0805LT but postponed first to 0900LT due to poor weather conditions en route. Shortly before takeoff at 0950LT, three additional passengers enplaned, giving a total of 15 passengers (the maximum allowed was 12). One minute after liftoff, during initial climb, at a height of 15 meters, the airplane's speed decreased to 60 km/h then it veered to the left, stalled and crashed. A passenger was killed while another one was uninjured. 15 others occupants were injured and a second passenger died from his injuries five days later, on November 16. At the time of the accident, weather conditions were considered as normal and the total weight of the aircraft and its CofG were within limits.

Probable cause:

It was determined that the loss of control during initial climb occurred after the pilot got distracted. For any reason, he adopted a wrong takeoff configuration and failed to take appropriate actions to maintain a positive rate of climb and a sufficient speed.

Crash of a PZL-Mielec AN-2 in Kazan: 1 killed

Date & Time: Jun 26, 1976 at 0811 LT

Type of aircraft:

Operator:

Registration:

CCCP-70764

Flight Phase:

Flight Type:

Survivors:

Site:

Schedule:

Kazan - Cheremshan

MSN:

1G132-19

YOM:

1971

Flight number:

SU349

Location:

Kazan

Country:

Region:

Crew on board:

Crew fatalities:

Pax on board:

Pax fatalities:

Other fatalities:

Total fatalities:

Aircraft flight hours:

4323

Circumstances:

Shortly after takeoff from Kazan Airport, while climbing, the crew encountered engine problems. The captain decided to maintain a low altitude and initiated a turn to the left when the engine failed completely 18 seconds later. While turning to the left at an angle of 20-27° and at a speed of 135 km/h, the airplane stalled, struck telephone wires and crashed in flames. The captain was killed while 10 other occupants were injured. The aircraft was destroyed.

Probable cause:

Engine failure at low height after takeoff over a populated area. The main cause of engine failure was a rupture of the cylinder n°8, which caused a leak and overheating. The presence of cracks in the right magneto slider BSM-9 also contributed to the engine failure. This caused the fuel-air mixture in the intake manifold to ignite.

Crash of a Yakovlev Yak-40 in Kazan

Date & Time: Apr 9, 1974

Type of aircraft:

Yakovlev Yak-40

Operator:

Registration:

CCCP-87369

Flight Phase:

Flight Type:

Survivors:

Site:

Schedule:

Kazan - Bugulma

MSN:

9 34 19 31

YOM:

1973

Location:

Kazan-Borisoglebskoye

Country:

Region:

Landing (descent or approach)

Crew on board:

Crew fatalities:

Pax on board:

Pax fatalities:

Other fatalities:

Total fatalities:

Circumstances:

During the takeoff roll, after a distance of 650 meters, the engine n°2 failed. The captain decided to continue the takeoff procedure but power and speed were insufficient to rotate. In such conditions, he abandoned the takeoff maneuver but unable to stop within the remaining distance, the aircraft overran and eventually collided with a earth mound. The cockpit was destroyed. All 34 occupants were evacuated, some of them were injured.

Probable cause:

Wrong decisions on part of the captain who continued the takeoff procedure with one engine almost inoperative. Investigations revealed that engine n°2 lost 90% of its power during the takeoff roll for unknown reasons.

Crash of a Tupolev TU-124V in Kazan

Date & Time: Nov 20, 1973

Type of aircraft:

Tupolev TU-124

Operator:

Registration:

CCCP-45031

Flight Phase:

Flight Type:

Survivors:

Site:

MSN:

2 35 09 01

YOM:

1962

Location:

Kazan-Borisoglebskoye

Country:

Region:

Crew on board:

Crew fatalities:

Pax on board:

Pax fatalities:

Other fatalities:

Total fatalities:

Circumstances:

After touchdown at Kazan-Borisoglebskoye Airport, the airplane was unable to stop within the remaining distance, overran and came to rest few dozen meters further. There were no casualties but the aircraft was written off.

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

Date & Time: May 8, 1972 at 1746 LT

Type of aircraft:

Operator:

Registration:

CCCP-45292

Flight Phase:

Flight Type:

Spraying (Agricultural)

Survivors:

Site:

Schedule:

Devyaternya - Devyaternya

MSN:

1G46-01

YOM:

1964

Location:

Devyaternya

Country:

Region:

Crew on board:

Crew fatalities:

Pax on board:

Pax fatalities:

Other fatalities:

Total fatalities:

Aircraft flight hours:

4891

Aircraft flight cycles:

18487

Circumstances:

The crew was involved in a crop-spraying mission for the kolkhoz (collective farm) of Karl Marx located in Devyaternya (Argyz district of Tatarstan). He decided to takeoff from an area facing a forest and after liftoff, while climbing, the airplane struck birch trees (24 meters high) and crashed in flames 1,162 meters from the departure point. The aircraft was destroyed by a post crash fire and both pilots were killed. Weather conditions were considered as good at the time of the accident.

Probable cause:

It was determined that the crew took the wrong decision in taking off facing the wooded area. The presence of orographic waves was considered as a contributing factor.

Crash of a PZL-Mielec AN-2R in Satyshevo: 1 killed

Date & Time: Jul 19, 1970 at 0610 LT

Type of aircraft:

Operator:

Registration:

CCCP-32106

Flight Phase:

Flight

Flight Type:

Spraying (Agricultural)

Survivors:

Site:

Plain, Valley

Schedule:

Satyshevo - Satyshevo

MSN:

1G93-12

YOM:

Location:

Satyshevo

Country:

Region:

Crew on board:

Crew fatalities:

Pax on board:

Pax fatalities:

Other fatalities:

Total fatalities:

Aircraft flight hours:

1932

Aircraft flight cycles:

6655

Circumstances:

While on a crop-spraying flight for the sovkhoz 'Mars' located in the Bogatyye Saby district of Tatarstan, the captain fall asleep in the cockpit and let the second pilot in command. During flight, the copilot failed to detect a forest belt in time while flying a turn at low height. The aircraft collided with trees of the forest belt 2 km west of Satyshevo, crashed 170 metres further on, caught fire and burnt out. While a pilot was killed, the second occupant was injured.

Probable cause:

The captain was asleep at the time of the accident and the copilot was managing the mission alone. It was reported that the crew was performing all the spraying missions without any protection, while the pesticides used were highly toxic and dangerous. It was also noted that the altimeters were not connected at the time of the accident.

Crash of an Antonov AN-2SKh in Cheremshan: 2 killed

Date & Time: Jun 8, 1964 at 1850 LT

Type of aircraft:

Antonov AN-2

Operator:

Registration:

CCCP-25467

Flight Phase:

Flight Type:

Ferry

Survivors:

Site:

Schedule:

Cheremshan - Kazan

MSN:

1 41 473 20

YOM:

1954

Location:

Cheremshan

Country:

Region:

Crew on board:

Crew fatalities:

Pax on board:

Pax fatalities:

Other fatalities:

Total fatalities:

Aircraft flight hours:

7985

Circumstances:

The crew was on a positioning flight from Cheremshan to Kazan after he completed crop spraying operations in the region of Cheremshan. After takeoff, while climbing to a height of 25 meters, the airplane banked 50° then stalled and crashed in flames in a field located 160 metres outside of the airfield's perimeter. A pilot and the passenger were killed while three other occupants were injured. The aircraft was destroyed.

Probable cause:

It was determined that the intoxicated crew flew unauthorized manoeuvre at low height shortly after lift-off. Control was lost.

Crash of an Ilyushin II-18V near Urakhcha: 67 killed

Date & Time: Apr 4, 1963 at 0430 LT

Type of aircraft:

Ilyushin II-18

Operator:

Registration:

CCCP-75866

Flight Phase:

Flight

Flight Type:

Survivors:

Site:

Plain, Valley

Schedule:

Moscow – Krasnoyarsk

MSN:

183 0059 01

YOM:

1963

Flight number:

SU025

Location:

Urakhcha

Country:

Region:

Landing (descent or approach)

Crew on board:

Crew fatalities:

Pax on board:

Pax fatalities:

Other fatalities:

Total fatalities:

Aircraft flight hours:

154

Aircraft flight cycles:

Circumstances:

While cruising at an altitude of 7,500 meters, the engine number four failed. Unable to determine which of the right engine failed, the crew shot down both engines and feathered both propellers. Control was lost and the airplane banked right and entered a dive. The aircraft reached a rate of descent of 1,800 meters per minute (30 meters per second). The ailerons were sheared off and after passing through the last cloud layer at an altitude of 200 meters, the crew elected to regain control but the airplane struck the ground at a speed of 650 km/h and crashed in a snow covered field located 3,5 km southeast of Urakhcha. The aircraft disintegrated on impact and debris were found on 250 meters width and 800 meters long. Both right engines were found 600 meters away from the point of impact and elements of the ailerons were found some 12 km from the crash site. It was determined that both right engines were not running at impact while both left engines were turning at full power. The accident was not survivable.

Probable cause:

Failure of the pitch control mechanism on the engine number four, which caused severe drag and a loss of control.

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

Date & Time: Dec 19, 1962 at 0947 LT

Type of aircraft:

Antonov AN-2

Operator:

Registration:

CCCP-15939

Flight Phase:

Flight Type:

Survivors:

Site:

Plain, Valley

Schedule:

Kamskoye Ustye – Kazan

MSN:

1 149 473 08

YOM:

Flight number:

SU563

Location:

Kazan

Country:

Region: