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CHARGE INDICATOR LAMPS ON ONE OR MORE EMERGENCY EXIT LIGHTS DO NOT COME ON WHEN 17-1.8 SWITCH IS AT DISARM (Continued) - TM-55-1520-240-T-3_1069
FAILURE  SYMPTOM  LIST  (Continued) - TM-55-1520-240-T-3_1072

TM-55-1520-240-T-3 CH-47D Heilcopter Manual
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TM   55-1520-240-T CHAPTER  18 INSTALLED   AVIONIC   SYSTEMS   TROUBLESHOOTING CHAPTER  OVERVIEW Chapter  18  contains  procedures  for  Installed  Avionic  Systems  troubleshooting.  Each avionic   system   and   failure   symptom   is   listed   below.   Included   in   this   chapter   are   locations and   views   of   all   electrical   connectors,   receptacles,   relays,   and   ground   connections   for each  Installed  Avionic  System. Refer   to   TM   55-1520-240-23   for   required   Avionic   System   maintenance   procedures. SYSTEM PARA GLOBAL   POSITIONING 18-1 ALTITUDE   VOICE   WARNING   SYSTEM 18-2 (RADAR   ALTIMETER DOPPLER/GPS   NAVIGATION   SYSTEM   (DGNS 18-3 HF   LIAISON   FACILITY 18-4 FAILURE   SYMPTOM   LIST GLOBAL   POSITIONING   SYSTEM S Y M P T O M TASK S Y M P T O M TASK GPS DISPLAY DOES NOT TURN ON OR VARY 18-1.4 GPS SYSTEM TRACKS LESS THAN FOUR 18-1.7 WITH  CDU  BRT  CONTROL SATELLITES   AND   ESTIMATED   POSITION   ERROR (EPE) IS NOT WITHIN LIMITS OF THE SYSTEMS FIGURE  OF  MERIT  (FM) NO MOVEMENT OF GPS RCVR TIME TOTALIZING METER GPS CDU DISPLAYS “FAIL” MESSAGE 18-1.5 18-1.6 DATA LOADER MODULE INFORMATION DOES NOT LOAD INTO GPS SYSTEM BUT NO ERROR MESSAGE  APPEARS  ON  CDU 18-1.8 KYK-13 KEY LOADING DISCREPANCIES 18-1.9 S Y M P T O M GPS   ALERT   INDICATOR   DISCREPANCIES T A S K 18-1.10 PILOT/COPILOT   HSI   DISCREPANCIES 18-1.11 GPS SYSTEM WILL NOT ZEROIZE 18-1.12 GPS SYSTEM WILL NOT RETAIN LOADED DATA AFTER AIRCRAFT POWER IS 18-1.13 REMOVED GO   TO   THE   NEXT   PAGE Change 21    18-3







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