TM 55-1520-240-T
ADVANCED FLIGHT CONTROLS SYSTEM
SYMPTOM
TASK
AFCS BITE OPERATES WITH ENGINE CONDITION LEVER IN
FLIGHT POSITION
11-3.3
AFCS COMPUTER BITE INDICATES 48
11-3.3
AFCS COMPUTER BITE INDICATES 6, 9, OR 18
11-3.3
AFCS COMPUTER BITE INDICATES 70-74
11-3.3
AFCS COMPUTER BITE INDICATES 95
11-3.3
AFCS HEADING HOLD WEAK OR INOPERATIVE
11-3.3
AFCS LONGITUDINAL CONTROL POSITION OUT OF TRIM
11-3.3
AFT LCT INDICATOR DOES NOT SHOW EXTENSION OR RE-
TRACTION IN MANUAL CONTROL
11-3.3
AFT LCT INDICATOR NOT IN GND POSITION
11-3.3
AFCS LATERAL STICK ONLY TURNS NOT COORDINATED
11-3.3
AFCS NO. 1 DC CIRCUIT BREAKER WILL NOT STAY CLOSED
11-3.3
AFCS NO. 2 DC CIRCUIT BREAKER WILL NOT STAY CLOSED
11-3.3
AFCS PITCH STABILIZATION ERRATIC OR OSCILLATORY
11-3.3
AFCS ROLL STABILIZATION ERRATIC/OSCILLATORY OR
ROLL ATTITUDE HOLD WEAK OR INOPERATIVE
11-3.3
BAROMETRIC ALTITUDE HOLD INOPERATIVE OR RE-
SPONSE ERRATIC (RADAR ATTITUDE HOLD OKAY)
11-3.3
BAROMETRIC AND RADAR ALTITUDE HOLD INOPERATIVE
OR RESPONSE ERRATIC
11-3.3
SYMPTOM
TASK
BOTH LCT INDICATORS NOT IN GROUND POSITION
11-3.3
CLTV DRIVER ACTR AC CIRCUIT BREAKER WILL NOT STAY
CLOSED
11-3.3
CLTV DRIVER ACTR CIRCUIT BREAKER WILL NOT STAY
CLOSED
11-3.3
CYCLIC TRIM AFT ACTR CIRCUIT BREAKER WILL NOT STAY
CLOSED
11-3.3
CYCLIC TRIM FWD ACTR CIRCUIT BREAKER WILL NOT
STAY CLOSED
11-3.3
CYCLIC TRIM MNL CIRCUIT BREAKER WILL NOT STAY
CLOSED
11-3.3
FORWARD LCT INDICATOR DOES NOT INDICATE EXTEND
OR RETRACT DURING MANUAL CONTROL
11-3.3
FORWARD LCT INDICATOR NOT IN GND POSITION
11-3.3
HDG SWITCH ENGAGE CAPTION DOES NOT LIGHT
11-3.3
HEADING SELECT MODE RESPONSE WEAK OR INOPERA-
TIVE (BOTH SYSTEMS)
11-3.3
NO. 1 AFCS AC CIRCUIT BREAKER WILL NOT STAY CLOSED
11-3.3
NO. 1 AFCS COMPUTER BITE INDICATES 85 OR 86
11-3.3
NO. 1 AFCS COMPUTER BITE INDICATES 87
11-3.3
NO. 1 AFCS COMPUTER BITE INDICATES 89
11-3.3
SYMPTOM
TASK
NO. 1 AFCS COMPUTER BITE SWITCH DOES NOT LIGHT
AND COUNTER DOES NOT STOP WHEN BITE SWITCH
PRESSED AND RELEASED
11-3.3
NO. 1 AFCS HEADING SELECT MODE RESPONSE WEAK OR
INOPERATIVE
11-3.3
NO. 1 AFCS OFF (WITHOUT 74) OR AFCS 1 (WITH 74 ) CAP-
SULE DOES NOT GO OUT WHEN SYSTEM SELECTED
11-3.3
NO. 1 AFCS OFF (WITHOUT 74) OR AFCS 1 (WITH 74) CAP-
SULE IS OUT WITH SYSTEM SELECTED OFF
11-3.3
NO. 1 AFCS PITCH ATTITUDE/AIR SPEED HOLD WEAK OR
INOPERATIVE
11-3.3
NO. 1 AFCS YAW STABILITY ERRATIC/OSCILLATORY
11-3.3
NO. 1 PITCH ILCA HAS ENGAGE TRANSIENT
11-3.3
NO. 1 ROLL ILCA DOES NOT EXTEND OR RETRACT WITH
LATERAL STICK MOTION
11-3.3
NO. 1 ROLL ILCA DOES NOT MOVE WHEN PILOT'S PITCH
AND ROLL TRIM SWITCH MOVED RIGHT OR LEFT
11-3.3
NO. 1 ROLL ILCA HAS ENGAGE TRANSIENT
11-3.3
11-2.2 Change 23