Republic of Yakutia (Sakha)

Landing (descent or approach)

Operator:

Registration:

CCCP-01789

Flight Phase:

Flight Type:

Survivors:

Site:

Schedule:

Verkhoyansk - Yunkyur

MSN:

1G107-36

YOM:

1969

Flight number:

SU337I

Location:

Yunkyur

Country:

Region:

Crew on board:

Crew fatalities:

Pax on board:

Pax fatalities:

Other fatalities:

Total fatalities:

Aircraft flight hours:

3329

Circumstances:

On final approach to Yunkyur (Sartan) Airstrip, the engine control lever disconnected following a faulty maintenance. The crew attempted an emergency landing in the tundra when the aircraft crash landed few km from the airfield. The aircraft was damaged beyond repair. All 14 occupants were evacuated, among them three passengers were slightly injured.

Probable cause:

Engine control lever disconnected on final approach due to faulty maintenance.

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

Date & Time: Jun 20, 1985

Type of aircraft:

Operator:

Registration:

CCCP-91783

Flight Phase:

Takeoff (climb)

Flight Type:

Cargo

Survivors:

Site:

MSN:

1G38-30

YOM:

1963

Location:

Moma

Country:

Region:

Crew on board:

Crew fatalities:

Pax on board:

Pax fatalities:

Other fatalities:

Total fatalities:

Circumstances:

After takeoff from Moma Airstrip, the single engine aircraft encountered difficulties to gain height. It stalled and crashed in an open field located past the runway end. The aircraft was damaged beyond repair while all three occupants were slightly injured.

Probable cause:

It was determined that the aircraft was carrying a load of cargo for a total weight of 1,619 kilos. The mass and balance document showed one passenger with 1,300 kilos of cargo only. At the time of the accident, the aircraft was 219 kilos above MTOW and the CofG was well beyond the aft limit. In such conditions, the aircraft was unable to climb properly.

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

Date & Time: Jun 5, 1985 at 1215 LT

Type of aircraft:

Operator:

Registration:

CCCP-29348

Flight Phase:

Flight

Flight Type:

Survivors:

Site:

Plain, Valley

Schedule:

Kobyay – Sangar

MSN:

1G77-31

YOM:

1966

Location:

Kobyay

Country:

Region:

Crew on board:

Crew fatalities:

Pax on board:

Pax fatalities:

Other fatalities:

Total fatalities:

Aircraft flight hours:

1394

Aircraft flight cycles:

20784

Circumstances:

The single engine airplane departed Kobyay at 1205LT on a regular schedule service to Sangar, carrying eight passengers and two pilots. While cruising at an altitude of 550 meters in good weather conditions, the engine lost power then failed. The crew attempted an emergency landing when the aircraft crashed in a prairie located about 35 km southwest of Sangar. All 10 occupants were uninjured while the aircraft was damaged beyond repair.

Probable cause:

Engine failure in flight following the failure of the cylinder n°7 due to manufacture problems.

Crash of a PZL-Mielec AN-2 in Borogon

Date & Time: Mar 25, 1985 at 1101 LT

Type of aircraft:

Operator:

Registration:

CCCP-44905

Flight Phase:

Takeoff (climb)

Flight Type:

Ferry

Survivors:

Site:

Schedule:

Borogon - Tiksi

MSN:

1G24-05

YOM:

1962

Location:

Borogon

Country:

Region:

Landing (descent or approach)

Crew on board:

Crew fatalities:

Pax on board:

Pax fatalities:

Other fatalities:

Total fatalities:

Circumstances:

After completing a cargo flight from Tiksi to Borogon, the crew was returning to Tiksi on a ferry flight. There were no passengers and no cargo on board. After takeoff from Borogon, while climbing to a height of 8 meters at a speed of 120 km/h, the flaps retracted automatically from 30° to zero. The aircraft entered an uncontrolled descent, struck the snow covered ground and crashed 250 meters past the runway end. All three crew members escaped with minor injuries while the aircraft was damaged beyond repair.

Probable cause:

It was determined that the flaps retracted prematurely and accidentally following a short-circuit by the flaps button where electrical resistances were corroded by condensation.

Crash of a Let L-410M in Chulman

Date & Time: Jul 4, 1984

Type of aircraft:

Let L-410

Operator:

Registration:

CCCP-67276

Flight Phase:

Flight Type:

Survivors:

Site:

MSN:

78 10 07

YOM:

1978

Location:

Chulman

Country:

Region:

Crew on board:

Crew fatalities:

Pax on board:

Pax fatalities:

Other fatalities:

Total fatalities:

Circumstances:

Upon landing at Chulman Airport, after a roll of 52 meters, the nose gear collapsed. The airplane slid on its nose and came to rest. There were no casualties.

Probable cause:

The nose gear collapsed following a hard landing on a poor runway condition and unfavorable winds.

Crash of an Antonov AN-2 near Toko

Date & Time: Jul 16, 1982 at 1310 LT

Type of aircraft:

Antonov AN-2

Operator:

Registration:

CCCP-15970

Flight Phase:

Takeoff (climb)

Flight Type:

Survivors:

Site:

Lake, Sea, Ocean, River

Schedule:

Toko - Uchur

MSN:

1 151 473 02

YOM:

1961

Location:

Toko

Country:

Region:

Crew on board:

Crew fatalities:

Pax on board:

Pax fatalities:

Other fatalities:

Total fatalities:

Circumstances:

The single engine airplane departed Toko on a flight to Uchur, carrying three passengers and a crew of two. On board were two unauthorized passengers who wanted to be dropped by the River Algoma to go fishing. The crew made a stop and dropped both passengers by the river then decided to takeoff again. But the available distance of 150-180 meters was insufficient and the aircraft's speed at takeoff was too low so it struck the river surface and crashed inverted in shallow water. All three occupants escaped uninjured while the aircraft was damaged beyond repair.

Probable cause:

Poor judgment on part of the crew about the distance available at takeoff. Insufficient takeoff speed was a contributing factor as well as the uneven/rough terrain.

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

Date & Time: Dec 18, 1981 at 1421 LT

Type of aircraft:

Charter/Taxi (Non Scheduled Revenue Flight)

Operator:

Registration:

CCCP-92858

Flight Phase:

Flight

Flight Type:

Survivors:

Site:

Plain, Valley

Schedule:

Keperveem – Chersky – Chokurdakh – Deputatsky

MSN:

1G53-10

YOM:

1965

Location:

Deputatsky

Country:

Region:

Crew on board:

Crew fatalities:

Pax on board:

Pax fatalities:

Other fatalities:

Total fatalities:

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-2TP in Suordakh

Date & Time: Sep 16, 1981 at 1445 LT

Type of aircraft:

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: