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EXTERNAL CARGO HOOK SYSTEM OPERATIONAL CHECK (Continued) - TM-55-1520-240-T-3_845
EXTERNAL CARGO HOOK SYSTEM OPERATIONAL CHECK (Continued) - TM-55-1520-240-T-3_847

TM-55-1520-240-T-3 CH-47D Heilcopter Manual
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TM 55-1520-240-T 16-1.4  EXTERNAL CARGO HOOK SYSTEM OPERATIONAL CHECK (Continued) 16-1.4 TASK RESULT 15.    Disconnect forward cargo hook connector (20).   DUAL HOOK FAULT capsule (14) shall come on.  If it does not, go to Task 16-1.16. 16.    Set MASTER switch (1) to ARM.   ARMED SW FAIL light (17) shall come on.  If it does not, go to Task 16-1.17. 17.    Press and release pilot's CARGO HOOK RELEASE RELEASE SW FAIL light (18) shall momentarily come on. switch (21). GROUND RELAY ACTIVATE light (19) shall come on and stay on.  If either or both lights do not come on, go to Task 16-1.18. 18.    Set MASTER switch (1) to OFF and then back to ARM. ARMED SW FAIL light (17) shall go out and come back on.  GROUND RELAY ACTIVATE light (19) shall go out.  If both lights stay on, replace HOIST/CARGO HOOK Panel. 19.    Press and release CARGO HOOK RELEASE switch RELEASE SW FAIL light (18) shall momentarily come on. (21) on copilot's pitch and roll control grip. GROUND RELAY ACTIVATE light (19) shall come on and stay on.  If either light does not come on, go to Task 16-1.19. 20.    Repeat step 18, then go to step 21. 21.    Press and release CARGO HOOK RELEASE switch RELEASE SW   FAIL light (18) and GROUND RELAY (22). ACTIVATE light (19) shall stay out.  If either light comes on, replace CARGO HOOK switch (4). 22.    Set CARGO HOOK switch (4) to ARM. 23.    Press and release CARGO HOOK RELEASE switch RELEASE SW FAIL light (18) shall momentarily come on. (22). GROUND RELAY ACTIVATE light (19) shall come on and stay on.  If either light does not come on, go to Task 16-1.20. 24.    Set CARGO HOOK switch (4) to RESET then to GROUND RELAY ACTIVATE light (19) shall go out.  If it RMTE. does not, replace CARGO HOOK switch (4). GO TO NEXT PAGE 16-12  Change 23







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