TM 1-1510-253-CL
EGPWS will be inoperative.
AP
Indicates a disengagement of autopilot, yaw damper
may also disengage.
Automatic Disengagement
1. AP & YD -- Acknowledge and cancel
Aural
2. Determine cause of disengagement
3. AP & YD -- SET As Required
ATT or HDG
INDICATES AN AHRS FAILURE
1. AHRS Circuit Breakers -- CHECK
2. AHRS Switch -- Select Operative AHRS
Autopilot and yaw damper may discon-
nect and may no longer function.
AHRS comparators will be inoperative.
If AHRS 1 is failed, TCAS will be inop-
erative.
Couple FGC to the operating side
AHRS to regain flight director opera-
tion.
DUAL AHRS FAILURE
1. AHRS Circuit Breakers -- CHECK
Use Electronic Standby Instrument
System (ESIS) and land at the nearest
suitable airport.
TCAS is inoperative.
Weather radar stabilization will be in-
operative.
E-47