Republic of Yakutia (Sakha)

Landing (descent or approach)

Operator:

Registration:

CCCP-40523

Flight Phase:

Flight Type:

Cargo

Survivors:

Site:

Schedule:

Ust-Kuyga - Suordakh

MSN:

1G83-26

YOM:

1967

Location:

Suordakh

Country:

Region:

Crew on board:

Crew fatalities:

Pax on board:

Pax fatalities:

Other fatalities:

Total fatalities:

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-2 near Olyokminsk

Date & Time: May 21, 1981 at 1019 LT

Type of aircraft:

Operator:

Registration:

CCCP-35198

Flight Phase:

Flight

Flight Type:

Survivors:

Site:

Plain, Valley

Schedule:

Vitim – Lensk – Olyokminsk

MSN:

1G144-22

YOM:

1970

Location:

Olyokminsk

Country:

Region:

Crew on board:

Crew fatalities:

Pax on board:

Pax fatalities:

Other fatalities:

Total fatalities:

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 a PZL-Mielec AN-2 in Aldan

Date & Time: Apr 3, 1980

Type of aircraft:

Operator:

Registration:

CCCP-16027

Flight Phase:

Flight Type:

Survivors:

Site:

Plain, Valley

Schedule:

Aldan - Uchur

MSN:

1G163-32

YOM:

1976

Location:

Aldan

Country:

Region:

Crew on board:

Crew fatalities:

Pax on board:

Pax fatalities:

Other fatalities:

Total fatalities:

Circumstances:

Shortly after takeoff from Aldan Airport, the engine lost power. The airplane lost height and crashed in a wooded area. There were no casualties while the aircraft was damaged beyond repair.

Crash of a PZL-Mielec AN-2TP in Lensk: 3 killed

Date & Time: Oct 27, 1979 at 1313 LT

Type of aircraft:

Operator:

Registration:

CCCP-32322

Flight Phase:

Flight Type:

Survivors:

Site:

MSN:

1G97-34

YOM:

1968

Flight number:

SU185Y

Location:

Lensk

Country:

Region:

Crew on board:

Crew fatalities:

Pax on board:

Pax fatalities:

Other fatalities:

Total fatalities:

Circumstances:

During initial climb, at a height of about 15-20 meters, the rear cabin door opened accidentally. Two passengers unfastened their seatbelt to close the door. This movement in the cabin caused the center of gravity to move past the rear limit by 37%. The aircraft reached a super critical angle of attack and at a speed of 60-65 km/h, it stalled and crashed in a near flat attitude near the runway (rate of descent estimated between six and eight meters per second). Two passengers were killed while 10 other occupants were injured. The copilot died from his injuries two days later.

Probable cause:

The wrong reaction of two passengers who decided to unfasten their seatbelt to close the cabin door, causing the CofG to be out of aft limit.

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

Date & Time: Oct 13, 1979 at 1652 LT

Type of aircraft:

Operator:

Registration:

CCCP-70805

Flight Phase:

Flight Type:

Survivors:

Site:

Schedule:

Olenek - Saskylakh

MSN:

1G133-08

YOM:

1972

Location:

Olenyok

Country:

Region:

Crew on board:

Crew fatalities:

Pax on board:

Pax fatalities:

Other fatalities:

Total fatalities:

Circumstances:

The aircraft took off from Olenek Airport at 1651LT. While climbing to a height of 100-120 meters, the engine lost power. The captain decided to return for an emergency landing and initiated a turn to the left when the airplane stalled and crashed, one minute after takeoff. The aircraft was destroyed and all five occupants were injured.

Probable cause:

It was determined that the loss of engine power was the consequence of the malfunction of the spark plugs due to an excessive accumulation of tetraethyl plumb.

Crash of a PZL-Mielec AN-2 in Chersky

Date & Time: Sep 25, 1979

Type of aircraft:

Operator:

Registration:

CCCP-92851

Flight Phase:

Flight

Flight Type:

Site:

Plain, Valley

MSN:

1G53-03

YOM:

1965

Location:

Chersky

Country:

Region:

Crew on board:

Crew fatalities:

Pax on board:

Pax fatalities:

Other fatalities:

Total fatalities:

Circumstances:

Crashed after an engine failure. Occupant fate unknown.

Probable cause:

Engine failure for unknown reasons.

Crash of an Antonov AN-26 in Chersky: 7 killed

Date & Time: Dec 9, 1978 at 1743 LT

Type of aircraft:

Antonov AN-26

Operator:

Registration:

CCCP-26547

Flight Phase:

Flight Type:

Cargo

Survivors:

Site:

Schedule:

Chersky - Zyrianka

MSN:

57302810

YOM:

1975

Location:

Chersky

Country:

Region:

Crew on board:

Crew fatalities:

Pax on board:

Pax fatalities:

Other fatalities:

Total fatalities:

Circumstances:

The aircraft was engaged in a cargo flight from Chersky to Zyrianka, carrying two loadmasters, five crew members and a load consisting of eight wooden copper coils. During the takeoff roll, at a speed of 200 km/h, the pilot-in-command started the rotation (the rotation speed was calculated at 215 km/h). The airplane rotated and continued to climb until the altitude of 150 meters when it entered stall conditions. It turn to the right and crashed in a huge explosion on an hotel located near the airport. The aircraft and the hotel were totally destroyed by a post crash fire. All seven occupants were killed while no one on the ground was injured.

Probable cause:

It was determined that the stall and subsequent loss of control during initial climb was caused by the cargo shifting. Investigations revealed that the wooden copper coils were not properly installed and secured in the cabin but only fixed with the onboard winch cable. At liftoff, the wooden copper coils moved to the rear of the cabin, causing the CofG to be out of the enveloppe and the aircraft to be uncontrollable. Loadmasters failed to install and secure the wooden copper coils according to the published procedures and failed to use appropriate equipment such as nets or belts. The copilot exercised an unsatisfactory supervision of the loading while the captain decided to takeoff despite the load was improperly secured.

Crash of a Yakovlev Yak-40 in Aldan

Date & Time: Apr 8, 1978 at 0652 LT

Type of aircraft:

Yakovlev Yak-40

Operator:

Registration:

CCCP-87911

Flight Phase:

Flight Type:

Survivors:

Site:

Schedule:

Aldan - Yakutsk

MSN:

9 73 18 54

YOM:

1977

Flight number:

SU401

Location:

Aldan

Country:

Region:

Crew on board:

Crew fatalities:

Pax on board:

Pax fatalities:

Other fatalities:

Total fatalities:

Aircraft flight hours:

422

Aircraft flight cycles:

301

Circumstances:

After a normal takeoff roll, the rotation was initiated at a speed of 178 km/h. During initial climb, the right wing dropped to an angle of 30°. Correction was attempted by ailerons but the airplane continued to descend, struck a 1,5 meter high snow wall and crash landed in a snow covered field. It lost its undercarriage and came to rest. All 12 passengers escaped uninjured while five crew members were slightly injured. The aircraft was damaged beyond repair.

Probable cause:

The exact cause of the accident and the reason of the right wing drop could not be established and identified. The takeoff speed was correct.

Crash of an Antonov AN-2T in Srednekolymsk

Date & Time: Oct 18, 1977 at 1156 LT

Type of aircraft:

Antonov AN-2

Operator:

Registration:

CCCP-55625

Flight Phase:

Flight Type:

Survivors:

Site:

Schedule:

Srednekolymsk – Nalimsk

MSN:

1123 473 05

YOM:

1959

Location:

Srednekolymsk

Country:

Region: