Khantia-Mansia okrug

Operator:

Maestro Aeroclub

Registration:

RA-33589

Flight Phase:

Flight Type:

Skydiving / Paratroopers

Survivors:

Site:

Schedule:

Yugorsk - Yugorsk

MSN:

1G230-31

YOM:

1988

Location:

Country:

Region:

Crew on board:

Crew fatalities:

Pax on board:

Pax fatalities:

Other fatalities:

Total fatalities:

Captain / Total flying hours:

12116

Captain / Total hours on type:

3068.00

Aircraft flight hours:

1250

Circumstances:

The single engine aircraft was engaged in a local skydiving mission, carrying one pilot and 9 skydivers. Shortly after take off from runway 31, while climbing to a height of about 80 meters, the engine suffered a power loss. The pilot initiated a left turn to reach the airport when the aircraft rolled to an angle of 60° then stalled and crashed in a snow covered field near a forest, bursting into flames. The aircraft was destroyed by a post impact fire. Nine occupants escaped injured and a passenger was killed.

Probable cause:

Most probably the accident with and An-2 RA-33589 aircraft was caused by aircraft beyond stall angle of attack entry during dynamic turn for emergency landing with reverse runway heading due to engine failure after take-off at low-altitude followed by shaking and its power loss resulted in aircraft ground impact with bank angle more than 60°. Engine failure was caused by high-temperature damage and destruction of cylinder-piston group details due to it inadequate technical operation and using motor gasoline in aircraft fuel flow system which quality didn't comply with requirements for preferred AI-95 gasoline in accordance with aeronautical equipment flight service evaluation program, Order of Ministry of Transport of the Russian Federation № НА-131-р from April 11, 2001 and engineering solution № АБ-1236-2003 from May 22, 2003. Most probably the contributing factor was partial skill loss of An-2 aircraft control by aircraft pilot in command (PIC). Flight operation was performed by PIC, meteorological minimas and which authorizations written in Private-Pilot License and the fact of medical flight-expert commission procedure were not documented. PIC's decision to perform straight-ahead landing most probably didn't allow to reduce the severity of accident consequences.

Final Report:

Ground fire of a Tupolev TU-154B-2 in Surgut: 3 killed

Date & Time: Jan 1, 2011 at 1525 LT

Type of aircraft:

Tupolev TU-154

Operator:

Registration:

RA-85588

Flight Phase:

Parking

Flight Type:

Survivors:

Site:

Schedule:

Surgut - Moscow

MSN:

83A588

YOM:

1983

Flight number:

KGL348

Location:

Country:

Region:

Crew on board:

Crew fatalities:

Pax on board:

126

Pax fatalities:

Other fatalities:

Total fatalities:

Captain / Total flying hours:

12202

Captain / Total hours on type:

2780.00

Copilot / Total flying hours:

3775

Copilot / Total hours on type:

3279

Aircraft flight hours:

32354

Aircraft flight cycles:

13147

Circumstances:

Ready for taxi, the crew started the engines when a short circuit occurred and a fire erupted in the rear compartment. The evacuation of all 134 occupants was initiated but three passengers died while 32 others were seriously injured. The aircraft was totally destroyed by fire. The OAT was -29° C at the time of the incident.

Probable cause:

A short circuit emerged while the aircraft generators were connected to the aircraft's electrical system after start-up of the engines, via an APU. The short circuit caused a strong fire in the generators compartment in the tail which spread rapidly through the fuselage. The cause of the fire was an electrical arc produced by electrical currents exceeding ten to 20 times the nominal loads when two generators not synchronized with each other were brought online but got connected together instead of being connected to parallel busses. The following contributing factors were identified:
- Poor technical conditions of contacts TKS233DOD responsible for connecting the generators with the electrical busses, that were damaged by prolonged operation without maintenance. A contact normally open was welded and fractured insulation material moved between contacts that are normally closed. These abnormal contact positions led to the connection between #2 and #3 generators.
- Differences in the schematic diagrams of generator 2 and generators 1 and 3. When the switch is moved from "check" to "enable" with no delay in the "neutral" position generator 2 is brought online without time delay which leads to increased wear of normally closed contacts in the TKS233DOD unit.
- The specific design of the electrical systems to ensure power supply to each bus from either the APU or either engine integrated drive generator.

Final Report:

Crash of a Tupolev TU-134SKh in Nyagan

Date & Time: Jun 24, 2003

Type of aircraft:

Tupolev TU-134

Operator:

Registration:

RA-65929

Flight Phase:

Flight Type:

Test

Survivors:

Site:

Schedule:

Nyagan – Salekhard

MSN:

66495

YOM:

1987

Location:

Country:

Region:

Crew on board:

Crew fatalities:

Pax on board:

Pax fatalities:

Other fatalities:

Total fatalities:

Circumstances:

The aircraft was subject to major maintenance during the last two months, especially with the rudder actuators that were replaced. As there were still problems with the actuators during the last flight, decision was taken to make the appropriate adjustments followed by a flight to Salekhard. During the takeoff roll on runway 16/34, at a speed of 150 km/h, the aircraft deviated to the left and the captain decided to counter this deviation by using the nosewheel steering system. This caused the right front tyre to burst. At a speed of 250 km/h, the takeoff procedure was abandoned but this decision was taken too late. Unable to stop within the remaining distance (the runway 16/34 is 2,530 metres long), the aircraft overran, lost its nose gear and rolled for 577 metres before coming to rest. All 11 occupants escaped uninjured while the aircraft was damaged beyond repair.

Probable cause:

The following findings were identified:
- Poor quality of work from the engineering personnel of Voronezh Avia during the replacement and adjustment of the hydraulic amplifier GU-108D,
- Unsatisfactory flying and technical operation of the aircraft after the completion of the replacement of the hydraulic amplifier, during which the incorrectly installed rudder actuator was not discovered,
- The decision taken by the crew to continue the takeoff procedure despite significant efforts needed for the deflection of the right rudder pedal already noted during the preflight checks,
- The late rejection of the takeoff procedure.

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

Date & Time: Nov 6, 2002

Type of aircraft:

Sverdlovsk Air Enterprise

Operator:

Registration:

RA-70140

Flight Phase:

Flight Type:

Survivors:

Site:

Landing (descent or approach)

Schedule:

Sovetsky – Svetly

MSN:

1G137-14

YOM:

1972

Location:

Country:

Region:

Crew on board:

Crew fatalities:

Pax on board:

Pax fatalities:

Other fatalities:

Total fatalities:

Circumstances:

Some passengers were late and the crew apparently hurried the departure to avoid a night flight to Svetly. Doing so, the crew failed to prepare the flight properly and did not proceed to any engine runup prior to taxi and takeoff. During the taxi manoeuvre, the aircraft suffered controllability problems so the crew selected the propeller lever to the fine pitch position. The takeoff procedure was initiated without checks and the crew forgot that the propeller lever was not in the takeoff position. After liftoff, at a height of 3-5 metres, the aircraft encountered difficulties to gain height and speed. The crew attempted an emergency landing when the aircraft collided with trees and crashed in a wooded area. All 15 occupants escaped uninjured while the aircraft was damaged beyond repair.

Probable cause:

Poor flight preparation on part of the crew who failed to follow the pre taxi and the pre takeoff checklist. The aircraft was unable to gain sufficient speed and height after takeoff because the propeller lever was not in the correct position.

Crash of a Let L-410UVP in Nyagan

Date & Time: Dec 2, 1996

Type of aircraft:

Let L-410

Operator:

Registration:

RA-67436

Flight Phase:

Flight Type:

Survivors:

Site:

Landing (descent or approach)

MSN:

84 11 40

YOM:

1984

Location:

Country:

Region:

Crew on board:

Crew fatalities:

Pax on board:

Pax fatalities:

Other fatalities:

Total fatalities:

Circumstances:

On final approach to Nyagan Airport, the crew realized he was not properly aligned with the runway but decided to continue. Upon touchdown, the right wing struck the runway surface. The aircraft rolled left and right for about 800 metres then veered off runway and came to rest in a ravine. All 15 occupants were injured, six seriously.

Probable cause:

It was determined that the aircraft was unstable during final approach for unknown reasons and that the crew failed to initiate a go-around procedure while the landing manoeuvre was obviously missed.

Crash of an Antonov AN-12 in Nizhnevartovsk

Date & Time: Nov 1, 1996

Type of aircraft:

Antonov AN-12

Operator:

Aviaobshchemash

Registration:

RA-11851

Flight Phase:

Flight Type:

Cargo

Survivors:

Site:

Landing (descent or approach)

MSN:

4 020 03

YOM:

1964

Location:

Country:

Region:

Crew on board:

Crew fatalities:

Pax on board:

Pax fatalities:

Other fatalities:

Total fatalities:

Circumstances:

On final approach, the aircraft lost height and struck the ground short of runway threshold. The undercarriage were torn off and the aircraft bounced before coming to rest few dozen metres further. All 15 occupants escaped uninjured while the aircraft was damaged beyond repair. At the time of the accident, the total weight of the aircraft was nine tons above the maximum landing weight.

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

Date & Time: Oct 26, 1996 at 2044 LT

Type of aircraft:

Yakovlev Yak-40

Operator:

Registration:

RA-88257

Flight Phase:

Flight Type:

Survivors:

Site:

Schedule:

Tyumen - Khanty-Mansiysk

MSN:

9 71 12 52

YOM:

1977

Location:

Country:

Region:

Crew on board:

Crew fatalities:

Pax on board:

Pax fatalities:

Other fatalities:

Total fatalities:

Aircraft flight hours:

21765

Aircraft flight cycles:

16947

Circumstances:

Following an uneventful flight from Tyumen, the aircraft was approaching Khanty-Mansiysk Airport by night and poor weather conditions due to snow falls and a visibility limited to 5,300 metres with a cloud base at 400 metres. On final approach, the aircraft descended below the MDA when it landed at a speed of 190 km/h on an helipad located 159 metres to the left of the runway and 950 metres from its threshold. The aircraft collided with three parked helicopters and crashed. Both pilots, a third crew member and two passengers were killed. The aircraft as well as three helicopter registered RA-22313, RA-25144 and RA-25939 were destroyed.

Probable cause:

The following findings were reported:
- The crew did not have sufficient information about the deterioration of the weather conditions at destination,
- The crew decided to continue the approach in a visibility that was below minimums,
- The power of the ground light system located at the helipad was higher than the runway light system, in conditions of limited visibility, which caused a wrong perception of the crew.

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

Date & Time: Aug 10, 1995

Type of aircraft:

Operator:

UraiAvia

Registration:

RA-40371

Flight Phase:

Survey / Patrol / Reconnaissance

Flight Type:

Survivors:

Site:

Schedule:

Mezhdurechensky - Uray

MSN:

1G222-50

YOM:

1987

Location:

Country:

Region:

Crew on board:

Crew fatalities:

Pax on board:

Pax fatalities:

Other fatalities:

Total fatalities:

Circumstances:

Shortly after takeoff from Mezhdurechensky Airport, while on a forest patrol flight to Uray, the engine did not have sufficient power and the aircraft was unable to gain sufficient height. It struck power cables, stalled and crashed 2 km from the airfield. All 25 occupants were injured, four of them seriously, and the aircraft was damaged beyond repair.

Probable cause:

It was determined that 23 passengers, among them 10 children, embarked illegally, and the crew decided to take off despite the total weight of the aircraft was well above MTOW.

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

Date & Time: Dec 22, 1993

Type of aircraft:

Operator:

Registration:

CCCP-01410

Flight Phase:

Flight

Flight Type:

Survivors: