TM 55-1520-240-T16-1.4 EXTERNAL CARGO HOOK SYSTEM OPERATIONAL CHECK (Continued)16-1.4TASKRESULT34. Set HOOK SELECT switch (2) to MID.35. Press and release pilot's CARGO HOOK RELEASECenter cargo hook shall open and remain open. MIDswitch (21).HOOK OPEN capsule (12) shall come on. Pilot andcopilot master caution lights (24) shall come on. If centercargo hook does not open, go to Task 16-1.23. If hookopens and MID HOOK OPEN capsule does not come on,go to Task 16-1.24.36. Set MASTER switch (1) to RESET then to ARM. Center cargo hook shall close and remain closed. MIDHOOK OPEN capsule (12) shall go out. Pilot and copilotmaster caution lights (24) shall go out. If center cargohook does not close, replace it. If capsule is still lit whencenter cargo hook closed, go to Task 16-1.12.37. Set HOOK SELECT switch (2) to AFT.38. Press and release pilot's CARGO HOOK RELEASEAft cargo hook shall open and drop load then relatchswitch (21).closed. AFT HOOK OPEN capsule (13) shall come on.Pilot and copilot master caution lights (24) shall come on.If aft cargo hook does not open, go to Task 16-1.25. Ifhook opens and AFT HOOK OPEN capsule does notcome on, go to Task 16-1.26.39. Set MASTER switch (1) to RESET then to ARM. Aft cargo hook shall stay closed. AFT HOOK OPENcapsule (13) shall go out. Pilot and copilot mastercaution lights (24) shall go out. If capsule is still lit, go toTask 16-1.13.GO TO NEXT PAGE16-14 Change 23
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