TM 55-1680-358-12&PSECTION II. DESCRIPTION AND DATA1-6. Description. The functional and physicaldescriptions of the Helicopter Internal Cargo HandlingSystem are as follows:a. Functional Description. The Helicopter InternalCargo Handling System provides low-friction, load/unloadconveyor ramps. It also includes conveyors for movingcargo within the aircraft.b. Physical Description. The Helicopter InternalCargo Handling System consists of three major sections.These are the cabin/cargo area, ramp section, and rampextension section, as shown in Figure 1-1.(1) Cabin/Cargo Area. The cabin section ofthe Helicopter Internal Cargo Handling System is madeup of three outboard rail/roller assemblies on each side ofthe cabin. These outboard assemblies are identical butsymmetrically opposite. These are outboard rail/rollerassemblies, stations 158.500 to 274.000, outboardrail/roller assemblies, stations 272.531 to 374.000, andoutboard rail/roller assemblies, stations 373.469 to487.000. These assemblies utilize twenty-six 5k tiedownfitting assemblies, eight 10k fitting assemblies and twotiedown fitting assemblies, station 360.000. Four inboardguide/roller assemblies are mounted in the center of thecabin floor. They are secured with ten centerline ring plugassemblies to the 5k rings in the floor.(2) Ramp Section. The ramp section of thesystem includes a right-hand ramp guide rail/rollerassembly and a right-hand ramp inboard guide/rollerassembly. There are also symmetrically oppositeassemblies. A separate ramp support assembly isprovided for use during loading and unloading.(3) Ramp Extension Section. This sectionuses two identical ramp extension roller assemblies andseparate ramp extension support assemblies.1-7. Tabulated Data. Refer to Table 1-1 for leadingparticulars pertinent to the Helicopter Internal CargoHandling System.Table 1-1. Leading ParticularsSystem Nomenclature ..................................................................................................... Helicopter Internal CargoHandling System (HICHS)Part Number ................................................................................................................... 18049 J 100Manufacturer ................................................................................................................... AAR Brooks & Perkins Corp.Advanced Structures Division(81868)Weight:Cabin Section .................................................................................................................. 647 poundsRamp Section ................................................................................................................. 141 poundsRamp Extension Section .................................................................................................. 51 poundsRamp Extension Supports ............................................................................................... 26 poundsRamp Support.................................................................................................................. 13 poundsTotal Weight ................................................................................................................... 878 poundsTypical Cargo:HCU-6/E (88 x 108 inches) .............................................................................................. 3HCU-12/E or HCU-10/C (54 x 88 inches) ......................................................................... 6Warehouse wooden pallets (40 x 48 inches) .................................................................... 8-10***Wheeled vehicles ............................................................................................................ *Miscellaneous (TOW, Hellfire, etc.) equipment (pallet or skidmounted).......................................................................................................................... *Personnel......................................................................................................................... **1-5
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