(pm halo) helmet assembly - Gentex Corporation

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• Snap-on visors(Figure 9). Snap-onvisors are snappeddirectly to the helmet.Visors are availablewith an MBU-12/Ptrim or an MBU-20/Ptrim and in clear orsunshade.• Visor cover(Figure 9). The visorcover protects thesnap-on visors in thestowed position. Thecover attachesto the visor withhook-and-pilefasteners.SunshadevisorClearvisorVisorcoverFigure 9. Snap-on Visors and Visor Cover• Step-in visor(Figure 10). Thestep-in visor isdesigned to be wornbetween the eyesand the night visiongoggles. Like thesnap-on visors, thestep-in visor issnapped directly tothe helmet and isavailable with anMBU-12/P trim or anMBU-20/P trim. Thestandard step-invisor is clear; aneodymium versionis also available.Figure 10. Step-in VisorModifiedSORZgoggle• Eye-protectivegoggles(Figure 11). Thefollowing types areavailable: themodified SORZ (withclear, sunshade, oramber lenses) andthe modifiedSKYEYES (with clearor sunshade lenses).Figure 11. Eye-protective GogglesModifiedSKYEYESgoggle6
SYSTEM CHECKOUT AND OPERATIONPerform system checkout to ensure that your helmet is in good operatingcondition. System checkout tasks include checking the fit of the helmet,performing an operational check of the communications system, attaching theoxygen mask and visors as required, and reporting any problems to yourmaintenance technician.Helmet Fit CheckCheck the fit of the helmet, keeping in mind the following WARNING andCAUTION notices.WARNING• Ensure that all helmet adjustment mechanisms are properly adjustedfor a snug, secure fit at all times when the helmet is worn. Failure todo so can result in an unstable helmet that will not protect the wearer.• If the helmet has an XLINER or a TPL, ensure that a nape pad isinstalled on the nape strap. Failure to do so could result in injury.CAUTIONWhen donning or doffing the helmet, flex the helmet just enough to allowsufficient clearance for the head. Excessive flexing may damage thehelmet.NOTES:• Helmet size Medium/Large is designed to fit 85 percent of the population.Personnel with hat sizes 7-5/8 or larger may require helmet size X-LargeWide.• Figure 12 (next page) shows a helmet with an adjustable padsuspension system. However, this procedure also applies to helmets withall other suspension systems (XLINER and TPL).1. Don the helmet as follows:a. Grip the helmet with thumbs hooked in the earcups (Figure 12, nextpage), and flex the helmet slightly to clear the head.b. Place the front edge of the helmet against the forehead.c. Rotate the helmet toward the rear and down onto the head. Ensure thatthe edgeroll is positioned just out of the aircrew member’s line of sightas the aircrew member looks upward.d. Allow the helmet to settle on the head for a few minutes before checkingthe fit.(Continued on next page)7
Page 1: Operation InstructionsPARAMASTERHIG
Page 4 and 5: SAFETY NOTICEWARNINGProper fitting,
Page 6 and 7: Basic HelmetAll basic helmets (Figu
Page 8 and 9: Optional ComponentsThe following op
Page 12 and 13: 2. Adjust the nape strap (Figure 13
Page 14 and 15: Attaching Step-in Visor1. Don the h
Page 16 and 17: Operating Communications SystemDepe
Page 18 and 19: Using 9" Mask Microphone Cable with
Page 20 and 21: Using 32" Mask Microphone Cable and
Page 22 and 23: Using Ear-To-Ear CableYou can use t
Page 24 and 25: 3. To use the ear-to-ear cablewith
Page 26 and 27: Periodic InspectionOperating person
Page 28 and 29: 8. Inspect the bayonet receivers as
Page 30 and 31: PARTS LISTSFollowing are the parts
Page 32 and 33: Optional ComponentsMicrophones (Fig
Page 34 and 35: Snap-on Visors(Figure 44)• MBU-12
Page 36 and 37: Single Radio Adapters (Figure 48)fo
Page 38 and 39: Specialty Adapters (Figure 51)05B12
Page 40: TP0257 REV. 4 FEBRUARY 2012

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