TM 1-8415-216-12&P
CHAPTER 2
OPERATING INSTRUCTIONS
Section I. CONTROLS AND INDICATORS
2-1. GENERAL. This section provides a functional description of all controls (knobs,
straps, etc.) operated by the crewmember.
a. Cap-Plug, Protective (Figure 2-1). The cap-plug, protective (3), located on the right
rear of the helmet shell, is designed for the future addition of a blown air head cool-
ing system. The adapter features a locking tab (1) that prevents accidental discon-
nection of the proposed hose. A hinged cover (2) assists in keeping dust out of the
connector assembly when the hose is not in use.
Figure 2-1. Cap-Plug, Protective
2-1
