Boeing 737-500, SP-LKA
Just after takeoff from Runway 09R at London Heathrow Airport (LHR), the pilots noticed that most of the information on both of the Electronic Attitude Director Indicators (EADI) and Electronic Horizontal Situation Indicators (EHSI) had disappeared. The aircraft entered Instrument Meteorological Conditions (IMC) at about 1,500 ft aal, and the co-pilot had no option but to fly using the standby attitude indicator and standby compass. He experienced difficulty in following radar headings. The aircraft returned to land at LHR after a flight of 27 minutes. The investigation determined that an incorrect stand position had been entered into the Flight Management System (FMS) during the pre-flight procedure.
Boeing 737-500, SP-LKA 06-08.pdf (1,622.17 kb)