Status: | Accident investigation report completed and information captured |
Date: | Sunday 27 June 2010 |
Time: | 15:45 |
Type: | Antonov An-2R |
Operator: | Vladimir Aviation Forest Protection |
Registration: | RA-62631 |
MSN: | 1G178-23 |
First flight: | 1978 |
Total airframe hrs: | 3208 |
Engines: | 1 PZL Kalisz (Shvetsov) ASz-62IR |
Crew: | Fatalities: 0 / Occupants: 2 |
Passengers: | Fatalities: 0 / Occupants: 1 |
Total: | Fatalities: 0 / Occupants: 3 |
Aircraft damage: | Damaged beyond repair |
Location: | near Voznesenskoye, Nizhny Novgorod region ( Russia)
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Phase: | En route (ENR) |
Nature: | Survey/research |
Departure airport: | ? |
Destination airport: | ? |
Narrative:Forced landing on a lake.
Probable Cause:
CONCLUSION:
The accident without casualties concerning AN-2 aircraft RA-62631 was the result of a forced landing on the water surface due unstable operation of the engine with the loss of power which resulted from the re-enrichment of the fuel-air mixture because of jamming of the needle valve of the left float chamber of the carburetor.
The most probable reason for jamming of the needle valve of the left float chamber is its clogging by foreign particles that resulted from failure to comply with section 2.02.01.20 of the rules of maintenance of the AN-2 while performing 100-hour maintenance works due to lack of RTO requirements for mandatory compliance.
Accident investigation:
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Investigating agency: | MAK Russia |
Status: | Investigation completed |
Duration: | 274 days (9 months) | Accident number: | final report | Download report: | Final report
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Classification:
All engine powerloss
Forced landing outside airport
Photos
accident date:
27-06-2010type: Antonov An-2R
registration: RA-62631
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.