The flight director will disappear if the angle of bank exceeds what value?

The flight director will disappear if the angle of bank exceeds what value?

• A. 45 degrees
• B. 30 degrees
• C. 60 degrees
• D. 15 degrees

Answer: (A)

The flight director’s guidance is only reliable within the bank angles the system is designed to command. On the A320, when the actual bank angle reaches about 45 degrees, the flight director cues are withdrawn to avoid giving you misleading or unstable guidance during a steep turn. Beyond this limit, the roll command the FD would try to display can no longer be trusted, so the cues disappear and you’ll rely on the attitude indicator and other flight controls instead. The other options sit either well within the normal display range (so the FD would still be present) or are outside typical operating limits, so they wouldn’t cause the FD to disappear.

The flight director’s guidance is only reliable within the bank angles the system is designed to command. On the A320, when the actual bank angle reaches about 45 degrees, the flight director cues are withdrawn to avoid giving you misleading or unstable guidance during a steep turn. Beyond this limit, the roll command the FD would try to display can no longer be trusted, so the cues disappear and you’ll rely on the attitude indicator and other flight controls instead. The other options sit either well within the normal display range (so the FD would still be present) or are outside typical operating limits, so they wouldn’t cause the FD to disappear.