Helmet's Flashcards
How many sizes does the HGU-55 series helmet come in?
3 M,L,XL
How is the light weight HGU-55 series coated?
nonreflective clear polyurethane
What do you use to replace the leather pull tab on the chin strap buckle?
5in 100lb test nylon chord.
For what factors do you inspect the roll barrel of a helmet chin strap?
symetrical doughnut, no more than 3 cracks over top of barrel
What is the ICNS designed to do?
adjust chin and nape at same time
The bayonet receivers is designed to hold the bayonet form an oxygen max at how many self locking positions
4
What does the premounting option for the bayonet receiver allow
tilt adjustment up or down 15 degrees
What does the H-154 A/AIC headset typicaly consist of?
MX8376/AR earcup assemblies which have ABS plactic shells, earphone holders, and ear seals
What material can you affix to the helmet shell to protect the inside surface of the light weight visor assembly?
Either 2 3/8 / 5in or 2 3/8 / 6in peice of leather depending on the mask type
How and who must approve aircrew to use the HCV and what aircraft is incompatable?
written letter by flight surgen on record and not for T-6A
What do we use the DMH-1 tester to check on flight helmets?
communication equipment
How often must an aircrew flight equipment technician inspect a frequently used helmet?
30 days w/mask 90 w/out
The size of the HGU-55/P helmet is determined by measuring the crewmembers what?
head length and bredth
If the head measurement is between two sizes which size do you pick?
the bigger of the two
How do you tie off the nape strap lacing-chord?
Squair knot
What length do you trim excess lacing on the nape strap?
1-2 inches
When repairing the shell what grade of sand paper is used?
320
When refurnishing the HGU-55/P shell, spray paint one coat of polyurethane over the entire helmet shell. This coat is an anchor coat and should be applied thinly. What is the cure time?
15 min
What must be applied to the shell to prevent excessive damage to the edge roll.
mole skin
What type of crewmember is the 56/P assigned to
helecoptor
OF what material is the 56/P shell made of
graphite polyurthine
How many sizes for the 56/P
4
How does an aircrew member adjust the chinstrap?
bouble D ring for one hand adjustment
How may oz does the HGU55/P light weight helmet shell reduce the total weight of the helmet compared to the standard 55-P
4oz
What is the ICNS nape strap torqued to
13+- 1 inch pounds
Which lightweight visor assembly used on the HGU-55 series helmet has a viscosity of 15-25% color shade
gradient
What is used to clean the lightweight visor lens on the 55/P
household detergent and water
one purpose of the AFTO form 334, Helmet and Oxygen Mask/Connector Inspection Data, is to
establish frequency of inspections
What is the approximate measurement, in inches from the center eye position to the helmet edge roll when fitting the HGU -55 series helmet
2+-1/4
What knot is used to tie off the standard nape strap after a proper fit is achieved on the 55/P helmet
square
How are the XS and XXS 56/P helmet sizes obtained?
use a thicker EAL
The nape strap pad is secured to the helmet shell on the 56/P helmet by using a?
nylon chord
Where is the connector located that is used to attach the communication earplugs to the 56/P shell
right rear
Which component is monted to the structure of the helmet display unit of the JHMICS that provides an electrical signal representitive of the pilot’s head position
Helmet vehicle interface
what is the maximum ammount, in inches, the JHMCS visor should be trimmed at once
1/8 in
