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Last updated: 21 June 2021
Status:Final
Date:Friday 30 August 2019
Time:07:30
Type:Silhouette image of generic AN2 model; specific model in this crash may look slightly different
Antonov An-2R
Operator:private
Registration: RA-33061
MSN: 1G218-48
First flight: 1986
Total airframe hrs:3848
Engines: 1 Shvetsov ASh-62IR
Crew:Fatalities: 0 / Occupants: 2
Passengers:Fatalities: 2 / Occupants: 5
Total:Fatalities: 2 / Occupants: 7
Aircraft damage: Damaged beyond repair
Location:Lake Syuryun-Kyuel area (   Russia)
Phase: En route (ENR)
Nature:Domestic Non Scheduled Passenger
Departure airport:?
Destination airport:?
Narrative:
The aircraft impacted a mountainside while performing a passenger/cargo flight between Us-Khatyn and Suordakh (Verkhoyansk region), Russia.

Probable Cause:

The accident was caused by the fact that the PIC did not maintain a safe flight altitude in mountainous terrain, which led to the aircraft getting into strong downdrafts while flying over the leeward side of the ridge, uncontrolled descent and collision with the top of the mountain.
The contributing factors, most likely, were:
- insufficient analysis of meteorological conditions and the possibility of the formation of strong ascending and descending air currents in the mountains;
- Failure of the PIC to take safety measures when flying in the mountains and actions in case of falling into downward air currents when crossing a mountain ridge;
- the use of motor gasoline with an octane rating of less than 95, which led to a decrease in engine power;
- performing a mission on the An-2 aircraft without the procedure for restoring skills and admission to flights on this type after a significant break in flights (about 15 years).

Accident investigation:
cover
Investigating agency: MAK
Status: Investigation completed
Duration: 1 year and 7 months
Accident number: final report
Download report: Final report

Classification:
Loss of control

Photos

photo of Antonov-An-2R-RA-33061
accident date: 30-08-2019
type: Antonov An-2R
registration: RA-33061
photo of Antonov-An-2R-RA-33061
accident date: 30-08-2019
type: Antonov An-2R
registration: RA-33061
photo of Antonov-An-2R-RA-33061
accident date: 30-08-2019
type: Antonov An-2R
registration: RA-33061
 
This information is not presented as the Flight Safety Foundation or the Aviation Safety Network’s opinion as to the cause of the accident. It is preliminary and is based on the facts as they are known at this time.
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