Incident Overview

Date: Thursday 4 April 1963
Aircraft Type: Ilyushin Il-18
Owner/operator: Aeroflot, Krasnoyarsk Civil Aviation Directorate
Registration Number: CCCP-75866
Location: 3,5 km SW of Urakhcha, Rybnaya Sloboda district, Tatarstan – ÿ Russia
Phase of Flight: En route
Status: Destroyed, written off
Casualties: Fatalities: 67 / Occupants: 67
Component Affected: Pitch control mechanism of prop no. 4Pitch control mechanism of prop no. 4
Category: Accident
An Ilyushin Il-18 passenger plane crashed near Urakhcha, Rybnaya Slobodada district, Tatarstan, resulting in the deaths of all eight crew members and 59 passengers. The flight departed from Moscow’s Sheremetyevo Airport at 03:12 to Krasnoyarsk, cruising at 6000 meters. The crew requested a climb to 8000 meters to reduce fuel consumption, which was initially denied due to conflicting traffic. The plane disappeared from radar screens shortly after reaching the 8000-meter altitude. It was found crashed on a snow-covered field. Investigation revealed a failure of the pitch control mechanism, causing the engine to reverse, and subsequent shutdown of both props. The plane entered a high-speed descent, and the crew was able to recover control, pulling up when breaking through low clouds at approximately 150-200 meters. However, the low altitude and high vertical speed prevented recovery.An Ilyushin Il-18 passenger plane crashed near Urakhcha, Rybnaya Slobodada district, Tatarstan, resulting in the deaths of all eight crew members and 59 passengers. The flight departed from Moscow’s Sheremetyevo Airport at 03:12 to Krasnoyarsk, cruising at 6000 meters. The crew requested a climb to 8000 meters to reduce fuel consumption, which was initially denied due to conflicting traffic. The plane disappeared from radar screens shortly after reaching the 8000-meter altitude. It was found crashed on a snow-covered field. Investigation revealed a failure of the pitch control mechanism, causing the engine to reverse, and subsequent shutdown of both props. The plane entered a high-speed descent, and the crew was able to recover control, pulling up when breaking through low clouds at approximately 150-200 meters. However, the low altitude and high vertical speed prevented recovery.

Description

An Ilyushin Il-18 passenger plane was destroyed when it crashed near Urakhcha, Rybnaya Sloboda district, Tatarstan in Russia, killing all eight crew members and 59 passengers. The Il-18 took off from Moscow’s Sheremetyevo Airport at 03:12 on a domestic flight to Krasnoyarsk. Cruising altitude was 6000 metres. During the flight, the crew requested permission to climb to 8000 m, which would decrease their fuel consumption. This was initially turned down because of conflicting traffic at that altitude. At 04:22 the crew of the Il-18 was allowed to climb to 8000 m because the other traffic had passed. The flight disappeared from radar screens when it had almost reached the cruising altitude. The airplane was found to have crashed on a snow-covered field. Investigation revealed that the pitch control mechanism of prop no. 4 failed, causing the engine to go into reverse. As the crew was not able to establish under these conditions which one of the right props had caused the problem both were shut down. The airplane had entered a high speed descent from which the crew was almost able to recover. Control was regained and the crew pulled up when breaking through the low clouds at 150-200 metres. However, due to low altitude, at a high vertical speed, it was impossible to prevent the accident.

Source of Information

https://www.airhistory.net/info/soviet.php, http://airdisaster.ru/database.php?id=337https://www.airhistory.net/info/soviet.php, http://airdisaster.ru/database.php?id=337

Primary Cause

Pitch control mechanism failure of prop no. 4.Pitch control mechanism failure of prop no. 4.

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