Loss of AFCS 1 results in loss of which DAFCS function?

• A. ALT Hold
• B. Airspeed Hold
• C. Attitude Hold
• D. Heading Hold

Answer: (A)

Altitude hold is the function tied to the AFCS 1 channel. AFCS 1 is the vertical control path that automatically maintains a selected altitude using the barometric reference. When AFCS 1 fails, that automatic altitude control is lost, so you no longer have ALT Hold and must manage altitude manually or rely on other systems if available. Other hold modes like airspeed hold, attitude hold, or heading hold are handled by different channels or subsystems, so they may still function even if AFCS 1 is lost.