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Autopilot Status Annunciators

Description

This column tells the pilot which Autopilot and which Flight Director is activated. It will also display the status of the Autothrust.

AP

This will show which Autopilot is active.

  • AP1 : Autopilot One is active.
  • AP2 : Autopilot Two is active.
  • AP1+2 : Both Autopilots are active.

FD

This will show which Flight Director is active.

  • 1FD- : Flight Director One is active (Captain's Side).
  • -FD2 : Flight Director Two is active (FO's Side).
  • 1FD2 : Both Flight Directors are active.
  • 1FD1 : Flight Director Two has failed but both Flight Directors are selected on.
  • 2FD2 : Flight Director One has failed but both flight directors are selected on.

A/THR

When A/THR is displayed in Cyan text, Autothrust is armed but not active. This means that thrust will be controlled by the thrust lever position.

Autothrust is armed by:

  • Setting the thrust levers to the TO/GA position if at least one Flight Director is active.
  • Setting the thrust levers to the FLEX position if at least one Flight Director is active and a FLEX temperature has been entered in the MCDU.
  • Pushing the A/THR button when the thrust levers are not in the Climb Position.

When A/THR is displayed in White Text, Autothrust is Active. This means that thrust will be controlled by the FADEC. (Note: The thrust levers do not move when autothrust is active).

Autothrust is engaged by:

  • Setting the thrust levers to the engagement detent when the Autothrust system is armed.
  • Pushing the A/THR button when the thrust levers are in the engagement range (below climb detent with both engines or below MCT with one engine out).
  • Activating Alpha Floor.

Back to Flight Mode Annunciators

Last update: August 25, 2021
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