The STAB DEGRADED advisory indicates the stabilator control has reverted to which mode?

• A. Limited Auto Mode
• B. Auto Mode
• C. Manual Mode
• D. Off

Answer: (A)

When the STAB DEGRADED advisory appears, the system has detected a partial failure in the stabilator control, so it switches to a safe, reduced-function mode rather than turning off stabilization entirely. Limited Auto Mode is that safe fallback: the stabilator still provides automatic control and some stability augmentation, but with restricted range and authority. This helps maintain controllability and trim without allowing full autopilot-like behavior that could be unsafe given the degradation.

Auto Mode would imply full automatic stabilator control, which isn’t available during degradation. Manual Mode would remove automatic stabilization altogether, and Off would disable stabilator control entirely. The advisory pointing to Limited Auto Mode reflects the need to retain as much automatic support as possible within the degraded condition.