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

At what pressure altitude is the bump takeoff range allowed?

1. -3000 to +2000 ft

2. -2000 to +3000 ft

3. 0 to +5000 ft

4. -1000 to +4000 ft

The correct answer is: -2000 to +3000 ft

The correct answer indicates that the bump takeoff range is allowed from -2000 to +3000 feet of pressure altitude. This range is essential for understanding the operational parameters of an aircraft during takeoff at different elevations relative to standard pressure levels. In this case, the definition of bump takeoff relates to the optimization of takeoff performance, particularly under varying atmospheric conditions. A range that includes negative altitudes (below sea level) up to positive values (above sea level) provides flexibility in operations where aircraft might frequently encounter environments affected by temperature deviations and elevation variations. The specific choice highlights how the operational capabilities are supported in both low-pressure situations, such as at sea level or below, which could arise in certain geographic areas, and up to moderate elevations where aircraft performance is influenced by factors such as air density and weight. It establishes a safe operational threshold for smooth takeoffs under a variety of meteorological conditions while ensuring compliance with safety protocols.