TM   55-1520-240-T l-l   FAILURE   SYMPTOM   LIST   (Continued) 1-1 S Y M P T O M T A S K S Y M P T O M T A S K S Y M P T O M T A S K CHAPTER  16 EXTERNAL CARGO HOOK SYSTEM AFT  CARGO  HOOK  DOES  NOT  OPEN AFT  HOOK  OPEN  CAPSULE  DOES  NOT  COME  ON WHEN  AFT  CARGO  HOOK  OPENS AFT  HOOK  OPEN  CAPSULE  LIT  WHEN  AFT  CARGO HOOK   CLOSED ARMED  SW  FAIL  LIGHT  DOES  NOT  COME  ON WITH  MASTER  SWITCH  AT  ARM CARGO  HOOK  CONT  EMER  REL  CIRCUIT  BREAKER DOES   NOT   STAY   CLOSED CARGO  HOOK  NORM  RLSE  CIRCUIT  BREAKER DOES   NOT   STAY   CLOSED CARGO  HOOK  OR  HOOKS  DO  NOT  RELEASE WHEN  EMERG  SWITCH  SET  TO  REL  ALL CARGO  HOOK  PWR  EMER  REL  CIRCUIT  BREAKER DOES   NOT   STAY   CLOSED 16-1.4 16-1.4 16-1.4 16-1.4 16-1.4 16-1.4 16-1.4 16-1.4 CARGO  HOOK  PWR  NORM  RLSE  CIRCUIT  BREAK ER  DOES  NOT  STAY  CLOSED CENTER  CARGO  HOOK  DOES  NOT  OPEN CENTER  CARGO  HOOK  DOES  NOT  STAY  OPEN FOR  10  TO  14  SECONDS  AFTER  EMERG  SWITCH RELEASED  FROM  REL  ALL DUAL  HOOK  FAULT  CAPSULE  LIT DUAL  HOOK  FAULT  LIGHT  DOES  NOT  COME  ON WITH   HOOK   DISCONNECTED DUAL  HOOK  RELAY  BOX  LIGHT(S)  DO  NOT  COME ON  WHEN  PRESSED FORWARD  CARGO  HOOK  DOES  NOT  OPEN FWD  HOOK  OPEN  CAPSULE  DOES  NOT  COME  ON WHEN  FORWARD  CARGO  HOOK  OPENS FWD  HOOK  OPEN  CAPSULE  LIT  WHEN  FORWARD CARGO  HOOK  CLOSED FORWARD  OR  AFT  CARGO  HOOK  DOES  NOT OPEN  WHEN  TANDEM  HOOK  RELEASE  LEVER  IS PULLED FWD  OR  AFT  HOOK  LOADED  LIGHT  IS  LIT  WHEN CARGO  HOOK  IS  UNLOADED FWD  OR  AFT  HOOK  LOADED  LIGHT  DOES  NOT COME  ON  WHEN  PRESSED HOOK  LOADED  LIGHT  DOES  NOT  COME  ON WHEN  FORWARD  OR  AFT  CARGO  HOOK  IS LOADED MID  HOOK  OPEN  CAPSULE  DOES  NOT  COME  ON WHEN  CENTER  CARGO  HOOK  OPENS MID  HOOK  OPEN  CAPSULE  LIT  WHEN  CENTER CARGO  HOOK  CLOSED RELEASE  SW  FAIL  LIGHT  OR  GROUND  RELAY  AC- TIVATE  LIGHT  NOT  ON  WHEN  COPILOT’S  CARGO HOOK  RELEASE  SWITCH  PRESSED RELEASE  SW  FAIL  LIGHT  OR  GROUND  RELAY  AC- TIVATE  LIGHT  NOT  ON  WHEN  HOIST  OPERA- TOR’S  CARGO  HOOK  RELEASE  SWITCH  PRESSED RELEASE  SW  FAIL  LIGHT  OR  GROUND  RELAY  AC- TIVATE  LIGHT  NOT  ON  WHEN  PILOT’S  CARGO HOOK  RELEASE  SWITCH  PRESSED 16-1.4 16-1.4 16-1.4 16-1.4 16-1.4 16-1.4 16-1.4 16-14 16-1.4 16-1.4 16-1.4 16-1.4 16-1.4 16-1.4 16-1.4 16-1.4 16-1.4 16-1.4 FLARE  DISPENSER  SYSTEM ARM  LIGHT  DOES  NOT  COME  ON  WHEN  ARM SAFE  SWITCH  SET  TO  ARM CHAFF  CIRCUIT  BREAKER  WILL  NOT  STAY CLOSED FLARE  COUNTER  DOES  NOT  INDICATE  00 WHEN  RIPPLE  FIRE  SWITCHES  HELD  UP FLARE  COUNTER  OR  TEST  SET  LIGHTS  DO  NOT CHANGE  WHEN  A  CABIN  FIRING  SWITCH PRESSED   AND   RELEASED FLARE-  COUNTER  OR  TEST  SET  LIGHTS  DO  NOT CHANGE  WHEN  PILOT  OR  COPILOT  FLARE  DISP SWITCH   PRESSED   AND   RELEASED FLARE  COUNTER  SEQUENCES  FROM  30  TO  00 WHEN  DIST  CONT  PANEL  ARM  SAFE  SWITCH SET TO  ARM LDG  GR  SW  STATUS  LIGHT  DOES  NOT  COME  ON LDG GR SW STATUS LIGHT IS ON LDG GR SW STATUS, READY TO FIRE, AND LDG GR  SW  BYPASS  LIGHTS  DO  NOT  COME  ON LDG GR SW STATUS, READY TO FIRE, OR LDG GR  SW  BYPASS  LIGHTS  DO  NOT  COME  ON WHEN   PRESSED READY  TO  FIRE  LIGHT  DOES  NOT  COME  ON HEADS-UP  DISPLAY  SYSTEM CCU  PANEL  WILL  NOT  ILLUMINATE FAIL  LAMP  ON  CCU  IS  ON ON  AND/OR  FAIL  LAMPS  WILL  NOT  ILLUMINATE PILOT’S  AND/OR  COPILOT’S  DISPLAY  HAS  NO DISPLAY PILOT’S  AND/OR  COPILOT’S  DISPLAY  REMAINS AT  MAXIMUM  INTENSITY PDU  AND  CPDU  TEST  DISPLAY  INDICATES INCORRECT   TYPE   AIRCRAFT SYMBOL   DOES   NOT   STOP   BLINKING PILOT   CANNOT   SELECT   DECLUTTER   ON   CCU 16-2.3 16-2.3 16-2.3 16-2.3 16-2.3 16-2.3 16-2.3 16-2.3 16-2.3 16-2.3 16-2.3 16-4.4 16-4.5 16-4.6 16-4.7 16-4.8 16-4.9 16-4.10 16-4.11 GO   TO   NEXT   PAGE Change  13 1-15