12
Chapter 2: Helmet Preparation and Operation
11.
Confirm that the pilot is comfortable while wearing the helmet.
If the pilot is comfortable, proceed to Step 12.
If the helmet is too tight, or pressure points exist, re-fit the TPL, SCL. or XLiner
(Paragraph 2-2.2).
If the helmet is too loose, obtain a smaller-size helmet return to Step 1 (Page 10).
12. Check the compression of the earseals against the pilot's ears. For best communication,
hearing protection, and comfort, the earseals should be compressed to approximately half
of their original thickness.
If the earseals are sufficiently compressed, continue to Step 14.
If the earseals are not sufficiently compressed, go to Step 13.
13. Have the pilot remove the helmet.
, attach one or
more fitting pads to the back of each
earcup. Then continue to Step 14.
NOTE:
You can install the fitting pads
whole or cut them to any size or shape
necessary to achieve the best fit.
14.
Check the fit of the nape pad. It should
fit as snugly as possible without causing
discomfort. Adjust the fit as necessary by
tightening the chin strap.
15. Ensure that the pilot is comfortable.
16. With the nape pad properly adjusted,
) up the
straps as far as possible, and tighten the
screws on the clamps to a torque value of
22 ±2 inch-ounces (in.oz), or 15.5 ±1 centi
Newton meters (cNm).
(Continued on next page)
When you perform Step 16, do not tighten
the screws too much, or the clamps will
crack.
CAUTION
Fitting pad
Earcup
Earseal
Clamp
Screws
ENLARGED VIEW OF
CLAMP (BOTH SIDES)
Figure 2-8. Earcup and Fitting Pad
Figure 2-9. Clamps
