Section II. EQUIPMENT DESCRIPTION AND DATA
1-8. EQUIPMENT CHARACTERISTICS, CAPABILITIES, AND FEATURES.
The HGU-56/P AIHS (see Figure 1-2 and Figure 1-3) provides ear, eye, and head protection
for aircrew personnel.
Through a custom-fitting process, the AIHS provides a stable
mounting base for all modules and components.
The basic helmet subassembly includes
the following components:
l a helmet shell
l a liner system
l a strap assembly, chin
l a shell, earphone assembly
l a standard communications system
an Aviators Night Vision Imaging System (ANVIS) dual visor assembly.
In addition, the AIHS supports the integration of various equipment and modules, such as:
the Cobra dual visor system module, which features a mounting area for the AH-1
helmet sighting system and offset ANVIS mount
l laser-protective visors
l ANVIS goggles, which afford enhanced vision for night flying
l the MBU-12/P oxygen mask cowling device
l the TEMPEST communications system
the Electra-Optic Helmet Sight System (EOHSS) module along with the Helmet
Display Unit (HDU) enables the crewmember to operate aircraft systems in the
The Cobra dual visor and AH-1 sight modules are MTOE property and
will remain with the unit.
The helmet remains with the aviator and is accounted for by the
aviator as clothing and equipment.
The EOHSS module for the AH-64 Apache aircraft is MTOE property
and will remain with the unit.