Incident Overview
Date: Wednesday 30 June 1976
Aircraft Type: Antonov An-2R
Owner/operator: Aeroflot, Central Region Civil Aviation Directorate
Registration Number: CCCP-70531
Location: within Valikhanovskiy district –
ÿ Kazakhstan
Phase of Flight: En route
Status: Destroyed, written off
Casualties: Fatalities: 3 / Occupants: 3
Component Affected: Propeller blade.Propeller blade.
Category: Accident
A test flight involving a propeller blade failure due to fatigue resulted in a catastrophic event. The engine mount failed, causing the powerplant to rotate to the left, leading to a prop cut through the wing spar and subsequent wing box collapse. The aircraft entered a spin, resulting in a crash near the Yuzhnyy collective farm.A test flight involving a propeller blade failure due to fatigue resulted in a catastrophic event. The engine mount failed, causing the powerplant to rotate to the left, leading to a prop cut through the wing spar and subsequent wing box collapse. The aircraft entered a spin, resulting in a crash near the Yuzhnyy collective farm.
Description
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.
Source of Information
https://www.airhistory.net/info/soviet.php, http://airdisaster.ru/database.php?id=850https://www.airhistory.net/info/soviet.php, http://airdisaster.ru/database.php?id=850Primary Cause
Fatigue failure of the propeller blade.Fatigue failure of the propeller blade.Share on:
