Incident Overview
Date: Thursday 16 December 1976
Aircraft Type: Yakovlev Yak-40
Owner/operator: Aeroflot / Ukraine
Registration Number: CCCP-87638
Location: near Kazakovskoye –
ÿ Ukraine
Phase of Flight: Manoeuvring (airshow, firefighting, ag.ops.)
Status: Destroyed, written off
Casualties: Fatalities: 5 / Occupants: 5
Component Affected: AircraftAircraft
Category: Accident
On a training flight, a Yakovlev aircraft stalled due to loss of airspeed following a simulated uncommanded stabilizer trim change. The aircraft then entered a spin and crashed 1.4 km west of Novogupalovka railway station near Kazakovskoye. The crash was attributed to airspeed loss followed by a stall and subsequent tailspin.On a training flight, a Yakovlev aircraft stalled due to loss of airspeed following a simulated uncommanded stabilizer trim change. The aircraft then entered a spin and crashed 1.4 km west of Novogupalovka railway station near Kazakovskoye. The crash was attributed to airspeed loss followed by a stall and subsequent tailspin.
Description
The Yakovlev operated on a training flight during which the pilots were practicing countering a (simulated) uncommanded stabilizer trim change. During these manoeuvres the airplane stalled. It entered a spin and crashed 1.4 km west of Novogupalovka railway station near Kazakovskoye. Conclusion: The cause of the disaster is the loss of airspeed, followed by stall and transfer to a tailspin. Possible causes of speed loss are: a) a mistake in the piloting technique by the crew; b) piloting the aircraft according to, possibly, overestimated readings of the left pilot’s airspeed indicator.
Source of Information
https://www.airhistory.net/info/soviet.phphttps://www.airhistory.net/info/soviet.phpPrimary Cause
Loss of airspeedLoss of airspeedShare on:
