TM  1-1520-240-10            4-3-13 e. Cable Cutter Arming Device.  The arming device consists  of  an  electrical  wiring  harness  with  electrical connectors at either end. This device is used to arm the cable cutter during hoisting operations. A connector at one end of the device couples with the threaded recep- tacle in the cable cutter; the connector at the other end of  the  device  plugs  into  a  receptacle  above  the  utility hatch and is labeled CABLE CUTTER. f. Extension Cord.  A 15-foot extension cord is pro- vided  to  allow  mobility  of  the  winch  or  hoist  operator. Electrical connectors at each end of the cord connect with receptacles in the winch control grip and in the hoist control panel. This cord is the only means of plugging in power to the switches on the control grip. g. Safety Harness.  A safety harness is provided for the hoist operator in operations involving the use of the rescue hatch. The harness permits complete freedom of movement while affording a measure of safety in pre- venting the wearer from falling through the door opening. The safety harness is attached to a fitting on the wall of the cargo compartment near the hoist control panel or a floor tiedown fitting. 4-3-5.  Hoisting System. The hoisting system (fig. 4-3-9) is used for air rescue and for aerial loading of smaller general cargo through the utility hatch. The hoisting system differs from the winch- ing  system  only  in  the  manner  in  which  the  cable  is reeved  and  the  mode  selected  at  the  winch.  Hoisting operations require the winch cable to be reeved over- head and the hoist load capacity to be limited to a maxi- mum of 600 pounds. The winch cable hook is used for hoisting operations together with the cable cutter which provides for quick release of the paid out cable and hook in event of emergency. On those aircraft provided with pulley  block  assemblies  having  pins  as  shown  in  (fig. 4-3-9  Sheet  1  of  2),  the  following  instruments  apply: When the hoisting system is reeved as shown in (fig. 4-3-9 Sheet 2 of 2), the pins and their retaining hardware are to be installed only if the cable makes a wrap angle of 180_ or more around the pulley. When not in use, the pins and their retaining hardware are to be stowed in the container provided for hoist accessories. WARNING To prevent dangerous electrical shock to personnel being hoisted, the cable must touch the ground or water prior to contact- ing personnel. 4-3-6.  Static Line Retriever. A static line retriever is provided with the static line an- chor cable (fig. 4-3-11). The retriever is used to haul static lines into the helicopter at the completion of a paradrop mission and can also be used to haul in a paratrooper hung up on a static line. The static line anchor cable and retriever are installed and operated as follows: a. Install  the  anchor  cable  between  sta  120  and 592. NOTE Do  not  allow  the  cable  to  sag  more  than  6 inches. b. Plug  the  cable  cutter  into  the  auxiliary  control panel at sta 95 and move the speed selector on the winch to CARGO. c. Plug the winch control grip into the power recep- tacle at sta 502 on the left side. d. Reeve the winch cable through a pulley attached to a 5,000-pound tiedown fitting at sta 140, buttline 20 left and  then  through  another  pulley  attached  at  sta  120. buttline 18 left (fig. 4-3-11). e. Reel out enough cable to allow the cable to rest on the floor and out of the way of personnel. Attach quick- disconnect and cover guard to the winch cable. f. When the static lines are ready to be retrieved, reel out additional cable and attach the retriever to the winch cable. Reel in sufficient cable; then disconnect the static lines from the anchor cable. 4-3-7.  Triple Cargo Hook System. Three external cargo hooks are provided for attaching external cargo. The hooks can be used with a single load on  one  hook,  two  hooks  in  tandem  (forward  and  aft hooks), or individual loads on three hooks. The tandem hook  configuration  provides  improved  load  stability  at higher airspeeds. With the triple hook system, up to three loads can be deposited at different locations during a single mission. The forward hook is at sta 249. The cen- ter hook is at sta 331. The aft hook is at sta 409. All hooks have normal release modes, emergency re- lease modes, and manual release modes. Normal re- lease mode can be controlled by both pilots or by the hoist operator. Emergency release of all hooks can be performed electrically by either pilot or manually by the crew member. CAUTION Do not lift or rotate the center cargo hook into the cabin area or allow the mid hook to lay on the cargo floor or access door panel during inspection or use. The exces- sive tension placed on the triple emergen- cy release cable housing assembly may partially dislodge the housing and engage or activate the forward and aft hook emer- gency    release    mechanism.    This    may cause  an  inadvertent  release  of  loaded forward and aft hook assemblies in flight. 4-3-8.  Center Cargo Hook.   The position of the center cargo hook is such that the load is suspended beneath the CG of the helicopter at sta 331.