Incident Overview

Date: Sunday 30 September 1973
Aircraft Type: Tupolev Tu-104B
Owner/operator: Aeroflot / Uzbekistan
Registration Number: CCCP-42506
Location: 10 km SW of Sverdlovsk-Koltsovo Airport (SVX) – ÿ Russia
Phase of Flight: Initial climb
Status: Destroyed, written off
Casualties: Fatalities: 108 / Occupants: 108
Component Affected: Artificial HorizonsArtificial Horizons
Category: Accident
A Tupolev 104B passenger jet crashed shortly after takeoff from Sverdlovsk (now Ekaterinburg), Russia, resulting in the deaths of all 100 passengers and eight crew members. The flight, Aeroflot flight 3932, was instructed to perform a procedure left turn after takeoff and climb to 1500 meters. The aircraft climbed through the clouds and the crew initiated the procedure turn. The bank angle rapidly increased to 75-80 degrees, and control was lost, leading to a descent at a rate of 75 m/sec. The plane crashed into a forest and burst into flames.A Tupolev 104B passenger jet crashed shortly after takeoff from Sverdlovsk (now Ekaterinburg), Russia, resulting in the deaths of all 100 passengers and eight crew members. The flight, Aeroflot flight 3932, was instructed to perform a procedure left turn after takeoff and climb to 1500 meters. The aircraft climbed through the clouds and the crew initiated the procedure turn. The bank angle rapidly increased to 75-80 degrees, and control was lost, leading to a descent at a rate of 75 m/sec. The plane crashed into a forest and burst into flames.

Description

A Tupolev 104B passenger jet was destroyed when it crashed shortly after takeoff from Sverdlovsk (now named Ekaterinburg), Russia. All 100 passengers and eight crew members were killed. Aeroflot flight 3932 took off at 20:33 on a 256ø heading. The crew were instructed to make a procedure left turn after takeoff and climb to 1500 m. The airplane climbed through the clouds and the crew initiated the procedure turn. The bank angle was sharp at 35-40 degrees. At 20:37, at an altitude of 1200 m, the bank angle increased to 75-80 degrees. Control was lost and the plane descended at a rate of 75 m/sec. It crashed into a forest and burst into flames. It appeared that the Tu-104 suffered a failure of the AC power to the artificial horizons. Flight SU3932 covered the route Sverdlovsk-Omsk-Novosibirsk-Chita-Khabarovsk-Vladivostok.

Source of Information

https://www.airhistory.net/info/soviet.php, http://www.airdisaster.ru/database.php?id=50https://www.airhistory.net/info/soviet.php, http://www.airdisaster.ru/database.php?id=50

Primary Cause

Failure of the artificial horizons AC power system.Failure of the artificial horizons AC power system.

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