Narrative:
One of the propeller blades failed in flight due to fatigue, causing violent vibration. The engine mount then failed causing the powerplant to rotate to the left. The prop cut through the spar of the port lower wing, causing the wing box to collapse. The aircraft entered a spin and crashed into the ground near the Yuzhnyy collective farm.
The aircraft operated on a test flight with a mechanic on board. The propeller had been fitted the day before.
Loss of control
» airdisaster.ru
| Status: | |
| Date: | Wednesday 30 June 1976 |
| Type: |  Antonov An-2R |
| Operator: | Aeroflot, Central Region Civil Aviation Directorate |
| Registration: | CCCP-70531 |
| MSN: | 1G145-07 |
| First flight: | 1973 |
| Total airframe hrs: | 2487 |
| Cycles: | 10995 |
| Crew: | Fatalities: 2 / Occupants: 2 |
| Passengers: | Fatalities: 1 / Occupants: 1 |
| Total: | Fatalities: 3 / Occupants: 3 |
| Aircraft damage: | Damaged beyond repair |
| Location: | within Valikhanovskiy district ( Kazakhstan)
|
| Phase: | En route (ENR) |
| Nature: | Test |
| Departure airport: | ? |
| ? |
One of the propeller blades failed in flight due to fatigue, causing violent vibration. The engine mount then failed causing the powerplant to rotate to the left. The prop cut through the spar of the port lower wing, causing the wing box to collapse. The aircraft entered a spin and crashed into the ground near the Yuzhnyy collective farm.
The aircraft operated on a test flight with a mechanic on board. The propeller had been fitted the day before.
Classification:
Prop/turbine blade separation Loss of control
Sources:
» Soviet Transports» airdisaster.ru
Photos
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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