Final Report B735 (LY-KLJ) vicinity Madrid Barajas Spain, 5 April 2019

Final Report B735 (LY-KLJ) vicinity Madrid Barajas Spain, 5 April 2019

Publication info
Author
CIAIAC (Spain)
Category
Loss of Control Airworthiness
Date of publication
02/07/2020
Date for review
02/02/2022

On 5 April 2019, a Boeing 737-500 crew declared an emergency shortly after departing Madrid Barajas after problems maintaining normal lateral, vertical or airspeed control of their aircraft in IMC. After two failed attempts at ILS approaches in unexceptional weather conditions, the flight was successfully landed at a nearby military airbase. The Investigation found that a malfunction which probably prevented use of the Captain’s autopilot found before departure was not documented until after the flight but could not find a technical explanation for inability to control the aircraft manually given that dispatch without either autopilot working is permitted.

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