How is autothrust arming confirmed on the FMA?

How is autothrust arming confirmed on the FMA?

• A. When A/THR is displayed in blue in Column 5 of the FMA, and the A/THR button illuminated on the FCU.
• B. When A/THR is displayed in white in Column 5 of the FMA, and the A/THR button is unlit.
• C. When A/THR is displayed in amber in Column 5 of the FMA, and the A/THR button is extinguished.
• D. When A/THR is displayed in green in Column 5 of the FMA, and A/THR button is blinking.

Answer: (A)

The confirmation of autothrust arming on the Flight Mode Annunciator (FMA) is indicated when "A/THR" appears in blue within Column 5. This blue display signifies that the autothrust system is armed and ready for use, signaling that the aircraft's thrust management can be automatically controlled based on the selected mode. Additionally, the illumination of the A/THR button on the Flight Control Unit (FCU) reinforces that the autothrust system is indeed engaged and functioning properly. This combination of visual cues—blue text on the FMA and a lit button—ensures pilots have clear, direct feedback about the status of the autothrust system. Understanding this process is essential for ensuring safe and efficient operation of the aircraft, as reliable thrust management is critical during various phases of flight.

The confirmation of autothrust arming on the Flight Mode Annunciator (FMA) is indicated when "A/THR" appears in blue within Column 5. This blue display signifies that the autothrust system is armed and ready for use, signaling that the aircraft's thrust management can be automatically controlled based on the selected mode. Additionally, the illumination of the A/THR button on the Flight Control Unit (FCU) reinforces that the autothrust system is indeed engaged and functioning properly.

This combination of visual cues—blue text on the FMA and a lit button—ensures pilots have clear, direct feedback about the status of the autothrust system. Understanding this process is essential for ensuring safe and efficient operation of the aircraft, as reliable thrust management is critical during various phases of flight.