Description

On September 13 2008, in night IMC a Boeing 737-500 being operated by Aeroflot-Nord was makimg a procedural approach to join the ILS final approach for runway 21 at Perm when loss of control occurred and terrain impact followed.

Synopsis

This is an extract from the aircraft accident Report (Final report B 737-505 VP-BKO) published by the Interstate Aviation Committee (MAK), Russian Federation:

"[…] the crew started descent from the flight level to waypoint Mendeleyevo […]. After passing over Mendeleyevo, in compliance with the Perm Approach Control instruction, the aircraft flew via the outer marker […] of Runway 21 which is the initial approach fix (IAF) for Runway 21 (magnetic heading 212°). After passing over the RWY [runway] with heading 110° M, the crew, following the Controller’s instruction, turned right for back course and started maneuvering for ILS approach to Runway 21.

After the base turn, approaching the landing course at 600 m with both autopilot and autothrottle disengaged, the aircraft started climbing up to 1300 m, rolled 360° over the left wing [then entered a deep descend with 65° nose down pitch] and collided with the ground."

A very detailed description regarding the chain of events leading to the accident are given in the Analysis section of the Report, beginning on page 96. Further, the Report uncovers the immediate events that led to the loss of control: