- LNAV -(armed) LNAV in white is armed to activate when parameters are met
- (active) LNAV in green activates when in position to turn onto the active route leg. immediate activation within 2 1/2 miles of active leg
HDG- HDG SEL - airplane turns to or maintains heading selected in MCP window.
- LOC - (armed) AFDS captures the localizer when within range and within 120 degrees of course
- (active) AFDS follows the localizer course
B/CRS (armed)AFDS is armed to capture and track inbound on the backcourse of localizer after the localizer capture
(active) AFDS tracks the inbound on backcoure of localizer
- TO -ON the ground, TO annunciates by selecting either F/D switch ON when the both flight directors are OFF
- TO roll and pitch guidance become active at lift-off
GA - After the reference thrust limit changes from taeoff to climb, GA arms wenever flaps are out of up or glideslope capture