Part 3/9:

The Critical Role of Automation

Understanding the functioning of the radio altimeter and autopilot is essential in dissecting the events that led to the crash. The Boeing 737's autopilot system requires three conditions to initiate a successful landing flare: no target altitude set, flaps at the appropriate angle, and altitude below 27 feet. Due to the faulty altimeter reading, the aircraft falsely believed it was at ground level, triggering the auto throttle to reduce engine thrust, preparing for landing.