e. Communications System (Figure 1-4). The communications system consists of a boom-mounted adjustable
microphone (5), a microphone cord (3), a communications cord (4) with a connector plug for radio communications, and
a pair of earphones (6) housed inside the earcups. Refer to TM 11-5965-279-13&P, Operator, Aviation Intermediate
Maintenance Manual, Including Repair Parts and Special Tools List for Headset-Microphone MK-896NA1 C Operating
f. Lightweight Dual Visor Assembly (Figure 1-4). The ANVIS dual visor assembly protects the eyes from glare, dust,
ballistic fragments, foreign particles, and flash fires. This assembly incorporates two polycarbonate visors: a clear outer
visor (8) operated via an adjustable lock (1) and a neutral inner visor (7) operated via an attached actuating knob (2).
The visor housing provides a mounting area (9) for a V-1 mount for ANVIS-6 night vision goggles.
Figure 1-4. SPH-4B Communications System and Lightweight Dual Visor Assembly