Incident Overview
Date: Sunday 17 July 1994
Aircraft Type: Yakovlev Yak-40D
Owner/operator: Sankuru Air Service, lsf Impulse-Aero
Registration Number: RA-87256
Location: Boma Airport (BOA) –
ÿ Congo (Democratic Republic)
Phase of Flight: Landing
Status: Destroyed, written off
Casualties: Fatalities: 5 / Occupants: 9
Component Affected: Aircraft brakesAircraft brakes
Category: Accident

An aircraft, leased from Impulse-Aero, crashed into a ravine during landing far down Boma’s 3609 feet runway 21. The pilots operated emergency and normal braking systems simultaneously, exceeding a limitation in the flight manual, resulting in the aircraft losing all brakes. The aircraft was left without brakes.An aircraft, leased from Impulse-Aero, crashed into a ravine during landing far down Boma’s 3609 feet runway 21. The pilots operated emergency and normal braking systems simultaneously, exceeding a limitation in the flight manual, resulting in the aircraft losing all brakes. The aircraft was left without brakes.
Description
The aircraft landed far down Boma’s 3609 feet long runway 21, overran and crashed into a ravine. It appeared that the pilots operated the normal and emergency brake systems simultaneously, which the flight manual forbids, and the aircraft was left with no brakes at all. The airplane had been leased from Impulse-Aero.
Source of Information
https://www.airhistory.net/info/soviet.phphttps://www.airhistory.net/info/soviet.phpPrimary Cause
Failure to comply with flight manual regulations regarding simultaneous braking systems.Failure to comply with flight manual regulations regarding simultaneous braking systems.Share on: