Crash of an Antonov AN-26B-100 in Deputatsky

Date & Time: Nov 21, 2012 at 1431 LT
Type of aircraft:
Antonov AN-26
Operator:
Registration:
RA-26061
Flight Phase:
Landing (descent or approach)
Flight Type:
Scheduled Revenue Flight
Survivors:
Yes
Site:
Airport (less than 10 km from airport)
Schedule:
Yakutsk - Deputatsky
MSN:
111 08
YOM:
1981
Flight number:
PI227
Location:
Deputatsky
Republic of Yakutia (Sakha)
Country:
Russia
Region:
Asia
Crew on board:
6
Crew fatalities:
Pax on board:
23
Pax fatalities:
Other fatalities:
Total fatalities:
0
Captain / Total flying hours:
8845
Captain / Total hours on type:
1150.00
Copilot / Total flying hours:
2566
Copilot / Total hours on type:
245
Aircraft flight hours:
22698
Aircraft flight cycles:
11257
Circumstances:
Following an uneventful flight from Yakutsk-Magan Airport, crew started the descent to runway 10. On touch down on a snow covered runway, aircraft landed slightly to the left of the centerline. After a course of 350 meters, left main gear hit a snow berm of 20-50 cm high. Aircraft continued to the left, veered off runway and came to rest in snow covered field with its right main gear and right wing severely damaged. All 29 occupants were evacuated safely while the aircraft was damaged beyond repair.
Probable cause:
The non-fatal accident with An-26B RA-26061 aircraft was caused by its RWY overrun that resulted in aircraft structure damage. The accident was possible due to combination of the following factors:
- Pilot's error resulted in approach procedure correction up to the moment of landing resulted in offset approach towards unpaved RWY axis and considerably to the left from its axis;
- Non-compliance of unpaved RWY of "Deputatsky" Airport" condition with Civil aerodrome operation manual requirements RF-94, in part of interface between cleaned and uncleaned surface of unpaved RWY with slope no more than 1:10;
- Nose-left moment during main landing gear movement along interface from recent snow up to 30-50 cm as a result of both left landing gear wheels dipping into snow.
Final Report:

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

Date & Time: Dec 18, 1981 at 1421 LT
Type of aircraft:
PZL-Mielec AN-2
Operator:
Registration:
CCCP-92858
Flight Phase:
Flight
Flight Type:
Charter/Taxi (Non Scheduled Revenue Flight)
Survivors:
Yes
Site:
Plain, Valley
Schedule:
Keperveem – Chersky – Chokurdakh – Deputatsky
MSN:
1G53-10
YOM:
1965
Location:
Deputatsky
Republic of Yakutia (Sakha)
Country:
Russia
Region:
Asia
Crew on board:
3
Crew fatalities:
Pax on board:
0
Pax fatalities:
Other fatalities:
Total fatalities:
0
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 an Antonov AN-2 on Mt Hadaraniya: 4 killed

Date & Time: Jul 20, 1956 at 1241 LT
Type of aircraft:
Antonov AN-2
Operator:
Registration:
CCCP-L5554
Flight Phase:
Flight
Flight Type:
Scheduled Revenue Flight
Survivors:
Yes
Site:
Mountains
Schedule:
Batagay – Deputatsky
MSN:
1 47 473 05
YOM:
2
Location:
Mt Hadaraniya
Republic of Yakutia (Sakha)
Country:
Russia
Region:
Asia
Crew on board:
3
Crew fatalities:
Pax on board:
3
Pax fatalities:
Other fatalities:
Total fatalities:
4
Aircraft flight hours:
1355
Circumstances:
The aircraft departed Batagay Airport at 1142LT bound for Deputatsky with a crew of three, three passengers and 543 kilos of various goods. En route, weather conditions worsened and the pilot climbed from 1,400 to 2,000 meters. As the visibility deteriorated, the aircraft deviated from the prescribed flight plan by 12 km and later, the pilot-in-command reduced his altitude to 1,300 meters when the airplane hit the slope of Mt Hadaraniya (1,468 meters high) located about 175 km northeast of Batagay. Two passengers were injured while four other occupants were killed. The aircraft was destroyed by impact forces and a post crash fire.
Probable cause:
The accident was the consequence of wrong decisions on part of the crew who decided to modify his route without prior permission while he was flying in below minima weather conditions above a mountainous area. The following findings were reported:
- poor flight organization,
- poor analysis of the flight documentation,
- meteorological forecast that did not reflect the reality.
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