Incident Overview

Date: Friday 11 February 2022
Aircraft Type: Antonov An-2R
Owner/operator: Kamchatsky Krechet
Registration Number: RA-33599
Location: 1 km SW of Koryaki, Yelizovsky district, Kamchatka – ÿ Russia
Phase of Flight: Initial climb
Status: Destroyed, written off
Casualties: Fatalities: 2 / Occupants: 2
Component Affected: Antonov An-2R aircraft, specifically the PM-1 magneto switch and its associated settings.Antonov An-2R aircraft, specifically the PM-1 magneto switch and its associated settings.
Investigating Agency: MAKMAK
Category: Accident
An Antonov An-2R crashed approximately 1 km from Koryaki, Kamchatka, Russia. Both pilots were killed. The aircraft carried a cargo of potatoes and tiles between the villages of Severny Koryaki and Tymlat. The accident was likely caused by exceeding critical angles of attack and stalling, resulting from a power setting issue. This was likely due to the PM-1 magneto switch being set to ‘1’ instead of ‘1+2’ as specified in the flight manual.An Antonov An-2R crashed approximately 1 km from Koryaki, Kamchatka, Russia. Both pilots were killed. The aircraft carried a cargo of potatoes and tiles between the villages of Severny Koryaki and Tymlat. The accident was likely caused by exceeding critical angles of attack and stalling, resulting from a power setting issue. This was likely due to the PM-1 magneto switch being set to ‘1’ instead of ‘1+2’ as specified in the flight manual.

Description

An Antonov An-2R crashed about 1 km from Koryaki, Kamchatka, Russia. The aircraft burst into flames and both pilots were killed. The aircraft was carrying a cargo of potatoes and tiles between the villages of Severny Koryaki and Tymlat. Conclusion: Most probably, the accident with the AN-2 RA-33599 aircraft occurred as a result of it reaching overcritical angles of attack and stall mode after performing takeoff with the maximum permissible weight and reduced power of the power plant. Most probably, the reduced power was caused by setting the PM-1 magneto switch to position “1” before takeoff instead of position “1+2” as stipulated by the flight manual. The most likely contributing factors were: – long flight interruptions by both crew members prior to the emergency flight; – shortcomings in training and interaction of crew members, as well as insufficient flight training, which resulted in loss of control over flight speed.

Source of Information

https://life.ru/p/1470529, https://41.mchs.gov.ru/deyatelnost/press-centr/novosti/4677478https://life.ru/p/1470529, https://41.mchs.gov.ru/deyatelnost/press-centr/novosti/4677478

Primary Cause

Incorrect magneto switch setting leading to exceeding critical angles of attack and stalling during takeoff.Incorrect magneto switch setting leading to exceeding critical angles of attack and stalling during takeoff.

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