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V 2 > Helmet's > Flashcards

Helmet's Flashcards

1
Q

How many sizes does the HGU-55 series helmet come in?

A

3 M,L,XL

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2
Q

How is the light weight HGU-55 series coated?

A

nonreflective clear polyurethane

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3
Q

What do you use to replace the leather pull tab on the chin strap buckle?

A

5in 100lb test nylon chord.

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4
Q

For what factors do you inspect the roll barrel of a helmet chin strap?

A

symetrical doughnut, no more than 3 cracks over top of barrel

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5
Q

What is the ICNS designed to do?

A

adjust chin and nape at same time

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6
Q

The bayonet receivers is designed to hold the bayonet form an oxygen max at how many self locking positions

A

4

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7
Q

What does the premounting option for the bayonet receiver allow

A

tilt adjustment up or down 15 degrees

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8
Q

What does the H-154 A/AIC headset typicaly consist of?

A

MX8376/AR earcup assemblies which have ABS plactic shells, earphone holders, and ear seals

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9
Q

What material can you affix to the helmet shell to protect the inside surface of the light weight visor assembly?

A

Either 2 3/8 / 5in or 2 3/8 / 6in peice of leather depending on the mask type

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10
Q

How and who must approve aircrew to use the HCV and what aircraft is incompatable?

A

written letter by flight surgen on record and not for T-6A

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11
Q

What do we use the DMH-1 tester to check on flight helmets?

A

communication equipment

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12
Q

How often must an aircrew flight equipment technician inspect a frequently used helmet?

A

30 days w/mask 90 w/out

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13
Q

The size of the HGU-55/P helmet is determined by measuring the crewmembers what?

A

head length and bredth

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14
Q

If the head measurement is between two sizes which size do you pick?

A

the bigger of the two

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15
Q

How do you tie off the nape strap lacing-chord?

A

Squair knot

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16
Q

What length do you trim excess lacing on the nape strap?

A

1-2 inches

17
Q

When repairing the shell what grade of sand paper is used?

A

320

18
Q

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?

A

15 min

19
Q

What must be applied to the shell to prevent excessive damage to the edge roll.

A

mole skin

20
Q

What type of crewmember is the 56/P assigned to

A

helecoptor

21
Q

OF what material is the 56/P shell made of

A

graphite polyurthine

22
Q

How many sizes for the 56/P

A

4

23
Q

How does an aircrew member adjust the chinstrap?

A

bouble D ring for one hand adjustment

24
Q

How may oz does the HGU55/P light weight helmet shell reduce the total weight of the helmet compared to the standard 55-P

A

4oz

25
Q

What is the ICNS nape strap torqued to

A

13+- 1 inch pounds

26
Q

Which lightweight visor assembly used on the HGU-55 series helmet has a viscosity of 15-25% color shade

A

gradient

27
Q

What is used to clean the lightweight visor lens on the 55/P

A

household detergent and water

28
Q

one purpose of the AFTO form 334, Helmet and Oxygen Mask/Connector Inspection Data, is to

A

establish frequency of inspections

29
Q

What is the approximate measurement, in inches from the center eye position to the helmet edge roll when fitting the HGU -55 series helmet

A

2+-1/4

30
Q

What knot is used to tie off the standard nape strap after a proper fit is achieved on the 55/P helmet

A

square

31
Q

How are the XS and XXS 56/P helmet sizes obtained?

A

use a thicker EAL

32
Q

The nape strap pad is secured to the helmet shell on the 56/P helmet by using a?

A

nylon chord

33
Q

Where is the connector located that is used to attach the communication earplugs to the 56/P shell

A

right rear

34
Q

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

A

Helmet vehicle interface

35
Q

what is the maximum ammount, in inches, the JHMCS visor should be trimmed at once

A

1/8 in

V 2 (11 decks)

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