TM 55-1520-240-T 1-1 FAILURE SYMPTOM LIST (Continued) 1-1 SYMPTOM TASK CHAPTER 11 (Continued) 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) 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 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 CAPSULE DOES NOT GO OUT WHEN SYS- TEM SELECTED 11-3.3 NO. 1 AFCS OFF (WITHOUT  74) OR AFCS 1 (WITH  74 ) CAPSULE 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 NO. 1 YAW ILCA DOES NOT EXTEND OR RETRACT WHEN PEDALS ARE MOVED 11-3.3 NO. 1 YAW ILCA HAS ENGAGE TRANSIENT 11-3.3 NO. 2 AFCS AC CIRCUIT BREAKER WILL NOT STAY CLOSED 11-3.3 NO. 2 AFCS COMPUTER BITE INDICATES 85 OR 86 11-3.3 NO. 2 AFCS COMPUTER BITE INDICATES 89 11-3.3 NO. 2 AFCS COMPUTER BITE SWITCH DOES NOT LIGHT AND COUNTER DOES NOT STEP WHEN BITE SWITCH IS PRESSED AND RELEASED 11-3.3 SYMPTOM TASK NO. 2 AFCS HEADING SELECT MODE RESPONSE WEAK OR INOPERATIVE 11-3.3 NO. 2 AFCS OFF (WITHOUT  74) OR AFCS 2 (WITH  74 ) CAPSULE DOES NOT GO OUT-WHEN SYSTEM SELECTED 11-3.3 NO. 2 AFCS OFF CAPSULE IS OUT WITH SYSTEM SE- LECTED OFF 11-3.3 NO. 2 AFCS PITCH ATTITUDE/AIR SPEED HOLD WEAK OR INOPERATIVE 11-3.3 NO. 2 AFCS YAW STABILITY ERRATIC/OSCILLATORY 11-3.3 NO. 2 PITCH ILCA HAS ENGAGE TRANSIENT 11-3.3 NO. 2 ROLL ILCA DOES NOT EXTEND OR RETRACT WITH LATERAL STICK MOTION 11-3.3 NO. 2 ROLL ILCA DOES NOT MOVE WHEN PILOT'S OR CO- PILOT'S PITCH AND ROLL TRIM SWITCH MOVE RIGHT OR LEFT 11-3.3 NO. 2 ROLL ILCA HAS ENGAGE TRANSIENT 11-3.3 NO. 2 YAW ILCA DOES NOT EXTEND OR RETRACT WHEN PEDALS ARE MOVED 11-3.3 NO. 2 YAW ILCA HAS ENGAGE TRANSIENT 11-3.3 PITCH AND ROLL CONTROL STICK DOES NOT MOVE FOR- WARD OR AFT WHEN PILOT'S OR COPILOT'S PITCH AND ROLL TRIM SWITCH IS MOVED FORWARD AND AFT 11-3.3 RADAR ALTITUDE HOLD INOPERATIVE OR RESPONSE ER- RATIC (BAROMETRIC ALTITUDE HOLD OKAY) 11-3.3 RADAR OR BARO ALT ENGAGED CAPTIONS DO NOT COME ON WHEN PRESSED 11-3.3 AFCS CONTROL PANEL AFCS CONTROL PANEL FAILS BAROMETRIC ALTITUDE TESTS 11-4.2 AFCS CONTROL PANEL FAILS CYCLIC TRIM-AUTOMATIC TEST 11-4.2 AFCS CONTROL PANEL FAILS CYCLIC TRIM MANUAL TEST 11-4.2 AFCS CONTROL PANEL FAILS DIODE TEST 11-4.2 AFCS CONTROL PANEL FAILS HEADING TEST 11-4.2 AFCS CONTROL PANEL FAILS PANEL ILLUMINATION TEST 11-4.2 AFCS CONTROL PANEL FAILS RADAR ALTITUDE TESTS 11-4.2 AFCS CONTROL PANEL FAILS SYSTEMS SELECT TEST 11-4.2 SYMPTOM TASK AFCS COMPUTER AFCS COMPUTER FAILS TEST 1 (CONTINUITY TEST) 11-5.2 AFCS COMPUTER FAILS TEST 2 (POWER SUPPLY TEST) 11-5.2 AFCS COMPUTER FAILS TEST 3 (LOGIC TEST) 11-5.2 AFCS COMPUTER FAILS TEST 4 (PITCH AXIS TEST) 11-5.2 AFCS COMPUTER FAILS TEST 5 (ROLL AXIS TEST) 11-5.2 AFCS COMPUTER FAILS TEST 6 (YAW AXIS TEST) 11-5.2 AFCS COMPUTER FAILS TEST 7 (DASH TEST) 11-5.2 AFCS COMPUTER FAILS TEST 8 (LONGITUDINAL CYCLIC TRIM (LCT) TEST) 11-5.2 AFCS COMPUTER FAILS TEST 9 (COLLECTIVE CONTROL DRIVER ACTUATOR (CCDA) TEST) 11-5.2 AFCS COMPUTER FAILS TEST 10 (YAW RATE TEST) 11-5.2 AFCS COMPUTER FAILS TEST 11 (NORMAL ACCELERATION TEST) 11-5.2 AFCS COMPUTER FAILS TEST 12 (PRESSURE TRANSDUC- ERS TEST) 11-5.2 AFCS COMPUTER FAILS TEST 13 (BITE TEST) 11-5.2 COCKPIT CONTROL DRIVE ACTUATOR (CCDA) PITCH COCKPIT CONTROL DRIVE ACTUATOR FAILS BRAKE FUNCTION TEST 11-6.2 PITCH COCKPIT CONTROL DRIVE ACTUATOR FAILS CIR- CUIT RESISTANCE TEST 11-6.2 PITCH COCKPIT CONTROL DRIVE ACTUATOR FAILS TRIM MOTOR TEST 11-6.2 THRUST COCKPIT CONTROL DRIVE ACTUATOR FAILS BRAKE FUNCTION TEST 11-6.2 THRUST COCKPIT CONTROL DRIVE ACTUATOR FAILS CIR- CUIT RESISTANCE TEST 11-6.2 THRUST COCKPIT CONTROL DRIVE ACTUATOR FAILS NULL VOLTAGE AND PHASING TEST 11-6.2 GO TO NEXT PAGE Change 17  1-13