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Chapter 2: Helmet Preparation and Operation
2-2 3 Checking Helmet Fit and Operation
Once you have determined the correct helmet size and custom-fitted the TPL, you must ensure
that the helmet is properly fitted and adjusted to the aircrew member, as well as familiarize the
aircrew member with proper helmet operation.
Tools/Equipment/Materials Needed
• Small cross-tip screwdriver;
used to adjust
the attaching hardware on the helmet
• Plastic sheeting;
used to make it easier to
position the earcups as the aircrew member
wears the helmet
• Torque screwdriver;
used to adjust the
nape strap clamp screws to the proper
tightness
Procedure
1. Referring to
, loosen (do not
remove) the two screws on each nape
strap clamp. Move both clamps down
as far as possible on the straps to provide
slack during the fitting process.
2. Temporarily insert a piece of paper or
plastic between each earcup and the pile
faster inside the helmet (to make it easier
to reposition the earcups).
3. Holding the earcups in place inside the
helmet, assist the pilot in donning the
4. Reposition the earcups until the ears are
centered within the earcups.
(Continued on next page)
Proper fitting of the helmet is imperative for the safety of the aircrew member. An
improperly fitted helmet can become unstable (failing to provide bump protection),
or it can be lost during a high-speed ejection (causing injury to the aircrew member).
Ensure that the helmet is properly fitted to the aircrew member.
Clamp
Screws
ENLARGED VIEW OF CLAMP
Figure 2-4. Nape Strap Clamps
Figure 2-5. Donning Helmet
