What does the half-bank mode provide?

• A. Maximum bank command of 15 degrees
• B. Maximum bank command of 25 degrees
• C. No bank command
• D. Automatic roll to level wings

Answer: (A)

Half-bank mode centers on limiting how much the aircraft can roll in response to a path command. In this mode, the autopilot/flight control system will not command a bank greater than 15 degrees, keeping turns shallow and predictable. This helps maintain stability and passenger comfort during approaches, altitude holds, or during delicate tracking where a steep bank could be unsafe or disorienting. If the path requires more than a 15-degree bank, the system won’t provide it in this mode, and you’d switch to a different mode or manually command more bank.

It’s not zero bank, so it isn’t no bank command. It isn’t automatic roll to wings level, so it doesn’t force level wings. And it isn’t a 25-degree limit, since the defining feature here is the 15-degree cap.