23
Chapter 2: Helmet Preparation and Operation
2-4 OPERATION
This section contains a summary of the helmet operational tasks described in the fitting and
installation sections of this chapter. Operational tasks include donning the helmet, fastening and
adjusting the chin strap, operating the visor, and connecting the mask microphone cord to the
helmet connector.
2-4 1 Donning Helmet
Don the helmet as follows:
1. Grasp the helmet in the earcup
areas.
2. Referring to
, place
the front of the helmet against the
forehead, and rotate the helmet
toward the rear and down onto the
head.
3. Ensure that the ears are centered
in the earcups.
2-4 2 Fastening Chin Strap
Referring to
adjust the chin/nape assembly as
follows:
1. Snap the chin strap.
2. Pull on the end of the chin strap to
adjust it for a snug fit.
3. Attach the end of the chin strap
securely to the pile fastener on the
chin pad.
Nape pad
(inside helmet)
LOWER FRONT VIEW OF HELMET
Snap
Buckle
End of chin strap
Chin pad
Figure 2-29. Donning Helmet
Figure 2-30. Fastening Chin Strap
For the safety of the aircrew member,
the chin strap must remain firmly
secured at all times of flight. This
prevents helmet rotation during
high-G maneuvers, or loss of helmet
during emergency ejection