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CHAPTER 9 ELECTRICAL SYSTEM TROUBLESHOOTING CHAPTER OVERVIEW
FAILURE SYMPTOM LIST (Continued) ANTICOLLISION LIGHTS

TM-55-1520-240-T-2 CH-47D Heilcopter Manual
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TM 55-1520-240-T FAILURE SYMPTOM LIST (Continued) AC POWER SYSTEM SYMPTOM TASK GEN 1 CAPSULE STAYS ON (GENERATOR SWITCH IN TEST) (WITH 74) 9-2.4 NO. 1 OR NO. 2 GENERATOR OFF CAPSULE OUT (WITHOUT 74) 9-2.4 GEN 1 AND GEN 2 CAPSULES OUT (WITH  74) 9-2.4 NO. 1 OR NO. 2 RECT OFF CAPSULE ON WHEN GEN NO. 1 OR NO. 2 SWITCH TURNED OFF (WITHOUT  74) 9-2.4 SYMPTOM TASK POS CIRCUIT BREAKER DOES NOT STAY CLOSED 9-3.3 SYMPTOM TASK COPILOT'S LANDING LIGHT DOES NOT COME ON 9-4.4 COPILOT'S LANDING LIGHT DOES NOT EXTEND OR DOES NOT FULLY EXTEND 9-4.4 COPILOT'S LANDING LIGHT WILL NOT RETRACT WITH CO- PLT SLT CONT SWITCH 9-4.4 LANDING LIGHT DOES NOT RETRACT OR DOES NOT FULLY RETRACT INTO HOUSING 9-4.4 SYMPTOM TASK FORM CIRCUIT BREAKER DOES NOT STAY CLOSED 9-5.3 SYMPTOM TASK NORMAL FORM CIRCUIT BREAKER DOES NOT STAY CLOSED 9-5.9 NORMAL FORMATION LIGHT OR LIGHTS NOT ON AT DIM 9-5.9 NORMAL FORMATION LIGHTS OUT OR DO NOT GET BRIGHTER AT INTERMEDIATE OR BRT POSITIONS 9-5.9 SYMPTOM TASK RECT 1 OR  RECT 2 CAPSULE ON WHEN  GEN NO. 1 OR NO. 2 SWITCH TURNED OFF (WITH  74) 9-2.4 NO. 2 GENERATOR OFF CAPSULE IS ON (GENERATOR SWITCH ON) (WITHOUT 74) 9-2.4 GEN 2 CAPSULE IS ON (GENERATOR SWITCH ON) (WITH 74) 9-2.4 POSITION LIGHTS SYMPTOM TASK POSITION LIGHT OR LIGHTS NOT LIT AT  BRT 9-3.3 LANDING LIGHTS (SEARCHLIGHTS) SYMPTOM TASK PILOTS LANDING LIGHT DOES NOT COME ON 9-4.4 PILOT'S LANDING LIGHT DOES NOT EXTEND OR DOES NOT FULLY EXTEND 9-4.4 PILOT'S LANDING LIGHT WILL NOT RETRACT WITH PLT SLT CONT SWITCH 9-4.4 PILOTS OR COPILOT'S LANDING LIGHT WILL NOT ROTATE CLOCKWISE OR COUNTERCLOCKWISE 9-4.4 FORMATION LIGHTS (WITHOUT 17) SYMPTOM TASK FORMATION LIGHT OR LIGHTS NOT ON AT DIM 9-5.3 FORMATION LIGHTS (WITH 17) SYMPTOM TASK NVG FORM CIRCUIT BREAKER DOES NOT STAY CLOSED 9-5.9 NVG FORMATION LIGHT OR LIGHTS NOT ON AT DIM 9-5.9 SYMPTOM TASK NO. 2 GENERATOR OFF CAPSULE STAYS ON (GENERATOR SWITCH IN TEST) (WITHOUT  74) 9-2.4 GEN 2 CAPSULE STAYS ON (GENERATOR SWITCH IN TEST) (WITH 74) 9-2.4 SYMPTOM TASK POSITION LIGHT OR LIGHTS NOT LIT AT DIM 9-3.3 SYMPTOM TASK SLT CONT CIRCUIT BREAKER (CO-PILOT'S) DOES NOT STAY CLOSED 9-4.4 SLT CONT CIRCUIT BREAKER (PILOT'S) DOES NOT STAY CLOSED 9-4.4 SLT FIL CIRCUIT BREAKER DOES NOT STAY CLOSED 9-4.4 SYMPTOM TASK FORMATION LIGHTS OUT OR DO NOT GET BRIGHTER AT INTERMEDIATE OR BRT POSITIONS 9-5.3 SYMPTOM TASK NVG FORMATION LIGHTS OUT OR DO NOT GET BRIGHTER AT INTERMEDIATE OR BRT POSITION 9-5.9 9-2.2  Change 19







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