What is the maximum negative G-load permitted?

• A. -1.0
• B. -0.5
• C. -2.0
• D. -1.5

Answer: (A)

G-load limits define how much downward or upward force the airplane and its occupants can safely experience. Negative G-loads occur when the aircraft is in a dive or accelerating downward, and a specified negative limit protects the airframe and systems as well as occupant safety. The maximum negative G-load permitted is -1.0 g, meaning the aircraft is designed to withstand up to one g of downward acceleration before reaching its structural and safety envelope. Values more negative than this, such as -1.5 g or -2.0 g, would exceed the design limits and are not allowed. A less negative value like -0.5 g is within the limit but does not represent the maximum capability of the airframe.