General Authority of Civil Aviation (GACA) Aeronautical Information Publication (AIP) Practice Exam

At what airport field elevation must the autopilot not be used below 100 feet?

1. 8000 Feet

2. 8400 Feet

3. 8500 Feet

4. 8600 Feet

The correct answer is: 8400 Feet

The critical elevation at which the autopilot should not be used below 100 feet is determined by the need for sufficient vertical reference during landing approaches, particularly in configurations where low altitudes may impair the pilot's ability to effectively monitor the flight path. For elevations above a certain threshold, the increased altitude may lead to potential issues with terrain awareness, and the complexity of managing the aircraft systems at these elevations can compromise safety if the autopilot is engaged too late in the landing process. In this context, the chosen elevation of 8400 feet represents a balance where transition from autopilot to manual control becomes essential as the aircraft approaches lower altitudes. Autopilot disengagement allows pilots to maintain better situational awareness and respond more effectively to any unexpected conditions during critical phases of flight. Understanding this limit helps pilots make informed decisions about their operational procedures, ensuring adherence to safety protocols while managing aircraft descent and landing.