Incident Overview
Date: Tuesday 11 November 1969
Aircraft Type: Ilyushin Il-18B
Owner/operator: Aeroflot, Uralsk Civil Aviation Directorate
Registration Number: CCCP-75699
Location: between Sverdlovsk and Ekaterinburg –
ÿ Russia
Phase of Flight: En route
Status: Destroyed, written off
Casualties: Fatalities: 0 / Occupants:
Component Affected: Trim tabs and auto-pilot control systems on the aircraft.Trim tabs and auto-pilot control systems on the aircraft.
Category: Accident
An aircraft carrying passengers from Sverdlovsk to Tashkent experienced a sudden and significant dive due to improper trim tab and auto-pilot control. The aircraft descended to an altitude of 8,400 meters and was recovered at a height of 6,600 meters, sustaining structural damage during the dive. The fuselage was utilized in the reconstruction of c/n 184007203, which suffered damage from a fire.An aircraft carrying passengers from Sverdlovsk to Tashkent experienced a sudden and significant dive due to improper trim tab and auto-pilot control. The aircraft descended to an altitude of 8,400 meters and was recovered at a height of 6,600 meters, sustaining structural damage during the dive. The fuselage was utilized in the reconstruction of c/n 184007203, which suffered damage from a fire.
Description
The aircraft was flying from Sverdlovsk (now Ekaterinburg) to Tashkent when the crew mishandled the trim tabs and auto-pilot, causing the aircraft to enter a dive. It descended from an altitude of 8,400 metres and was recovered by the crew at a height of some 6,600 metres. A safe landing was carried out, but the aircraft suffered structural damage during the dive at up to 2.7 g. The fuselage was used in rebuilding of c/n 184007203, which was damaged in a fire.
Source of Information
https://www.airhistory.net/info/soviet.phphttps://www.airhistory.net/info/soviet.phpPrimary Cause
Improper trim tab and auto-pilot control leading to a sudden and rapid descent.Improper trim tab and auto-pilot control leading to a sudden and rapid descent.Share on:
