When both FDs and all APs are off, the only FMA display that may be visible is?

When both FDs and all APs are off, the only FMA display that may be visible is?

• A. The A/THR window
• B. The ALT window
• C. The ENG window
• D. The A/PM window

Answer: (A)

In the Flight Mode Annunciator, you see the active guidance modes that are actually commanding the aircraft. If both flight directors and all autopilots are off, the lateral and vertical guidance tied to those systems is not engaged, so those AP/FD related annunciations disappear. The auto-throttle, however, can stay active independently, so A/THR can still be shown on the FMA. Other windows like the altitude window or engine window aren’t part of the FMA annunciations and don’t appear as FMA elements simply because AP/FD are off. So the only FMA display that may remain visible is the A/THR window.

In the Flight Mode Annunciator, you see the active guidance modes that are actually commanding the aircraft. If both flight directors and all autopilots are off, the lateral and vertical guidance tied to those systems is not engaged, so those AP/FD related annunciations disappear. The auto-throttle, however, can stay active independently, so A/THR can still be shown on the FMA. Other windows like the altitude window or engine window aren’t part of the FMA annunciations and don’t appear as FMA elements simply because AP/FD are off. So the only FMA display that may remain visible is the A/THR window.