the airbus stockholders on FR will now proceed to lose their minds about the wrong airplane.
“That bug kicks in when airliner crews try to program the autopilot to follow what the FAA described as “a selected instrument approach to a specific runway”.
Seven runways, of which five are in the US, and two in South America - in Colombia and Guyana respectively – trigger the bug. Instrument approach procedures guide pilots to safe landings in all weather conditions regardless of visibility.
“All six display units (DUs) blanked with a selected instrument approach to a runway with a 270-degree true heading, and all six DUs stayed blank until a different runway was selected,” noted the FAA’s airworthiness directive, summarising three incidents that occurred on scheduled 737 flights to Barrow, Alaska, in 2019.