JHMCS, COMBAT EDGE MASK, TORSO HARNESS, HGU-55/P TASK EVAL QUESTIONS
The bayonet screws are not interchangeable
Are the bayonet screws interchangeable?
What side of the nylon cloth is facing outward preferably, when installing JHMCS mount?
Dull facing out
Date of installation proceeded by the letter I in 1 inch characters
How and with what size characters do you use to mark the harness DOI with?
Cutting in half, crushing, or any means to render useless
How are laser type visors discarded?
Harnesses shall not be stored in direct with concrete floors. They shall be stores in a dry place, preferably in wooden bins or specially constructed racks, and they shall be protected from sunlight.
How are torso harnesses stored?
Tack pull tab to webbing, single 8/4 one turn. Surgeons know overhand
How do you prevent the LPU fastener from unzipping itself?
Brush with alcohol. Let dry for 10 minutes
How do you remove dirt particles with receptacle insulator cavities?
Measure hat band with cloth tape measure
How is the head measured for fitting?
Cleaned with diluted solution of mild household detergent, ivory or equivalent. Use soft flannel cloth, soft cotton pads, or water dampened chamois for cleaning and allow to air dry. Apply anti-fog solution to the visor using a dry lint-free cloth.
How is the visor lens (deep) cleaned?
Two
How many canopy releases are there on the harness?
Three
How many quick disconnects adjustment points are there on the harness?
Two adjusters
How many secondary adjusters are there for the fitting process of a harness?
Medium, Large, and X-Large
How many sizes does the JHMCS helmet have?
3
How many strands of underlying wire braided need to be broke before repair?
180 days
How often are the KOCH release lubricated?
90 days
How often are the UHVI/QDC/UC seals replaced?
Not necessarily every 30 days, not exceeding 90 days
How often do the masks on the JHMCS need to be broken down?
Whole month or shortened, IMMMYY
How should the date of DOI be annotated on the harness?
13 years
IF the the harness sling strap is replaced what is the service life form DOM?
Tack both corners with two turns 8/7 double wax.
If the D-Rings for the LPU rotate after installation what do you do?
Directly against the V-Ring
Stowing webbing ends to the OUTSIDE where should webbing be in regards to the V-ring?
Lightweight and Hinged
What are the 2 type of bayonet recievers
Protection from sun and wind, surface for symbology
What are the 2 visor assembly functions?
Tack horizontal, Tack Vert., Stich Horizontal, Stich Vert.
What are the 4 different methods for securing D-Rings?
Loctite, MIL-S-22473, Grade CV to first 2-3 threads
What compound is put on the JHMC bracket screws?
Shall be condemned
What do you do with harnesses used in emergency escape conditions?
Remove the hardware
What do you do with the hardware on a condemned hekmet?
Combined Advanced Technology Enhanced Design "G" Ensemble
What does COMBAT EDGE stand for?
Joint Helmet Mounted Cueing System
What does JHMCS stand for?
MBU-20/P, CSU-17/P, KMU-511/P, CRU-94/P OR 120/P
What does the COMBAT edge consist of?
4 sections of leather and one continuous foam core
What does the edge roll consist of?
Can be tacked adjacent to the buckle
What is an alternate way to tack the lumbar strap?
Visor Assembly
What is not required for altitude chamber training students?
PN 89B7698-11, -12, -13 (Yellow Bladder): 3/4 - 1 3/4 inches PN 89B7698-21, -22 (Black Bladder): 1 1/16 - 1 1/4 inches from center line
What is the allowable range of the bladder fastener tape?
4 hours
What is the cure time for the ejector snaps?
30 Days
What is the inspection cycle for the torso harness?
Double 8/4 waxed, two turns
What is the lumbar strap tacked with?
Max 0.031 inches
What is the maximum gap allowed in the ejector seat aircraft?
1 through 5
What is the number on the size adjustment guides?
Sizing, the 16/P is smaller
What is the primary differences between the PCU-15/P and PCU-16/P?
7 +/- 2 pounds
What is the pull force of the ejector snaps?
Provides basic head protection, sound attenuation, symbology, weapons cueing and a communication system for aircrew personnel
What is the purpose of the JHMCS helmet?
10 years from DOM, 7 years from DOI
What is the service life of the torso harness?
13 +/- 1 in lb
What is the torque of the nape straps screws?
RTV MIL-A-46146B
What is used on visor tang screws?
Small hair line cracks adjacent to edge roll less than 0.5 inches
What kind of cracking is permissible in JMHCS helmets?
Bourbon Forge 85 ejector snaps.
What kind of ejector snaps are not authorized on ejection seat aircraft?
Medium and Large
What sizes do the Skull Cap come in?
Pile Velcro
What sort of tape needs to be added to visor lens?
Forward-leaning stance
What stance does the aircrew need to be in during fitting?
2 +/- 1/4 inches
When fitting what is the edge roll to center eye postion distance?
Bend and apply 7/8 x 7/8 in adhesive tape
When installing PACE what modification do you do to the J-Hook?
No more than 3 inches
When removing EAL, how far can you insert the spatulas?
Parachute risers
Where does the aircrew attach the quick-release fittings?
Top, middle, or bottom
Where does the pull tab need to be on the HVI flute?
2 on front, 2 on rear, (optional) 1 in middle
Where should the hook and pile be placed for the comfort liner?
AFTO Form 391
Which AFTO Form is the harness inspections recorded on?
Five
Which adjustment guide number is the smallest?
X-Liners
Which liner is not authorized in JHMCS helmets?
Visor snap screws
Which screws need to be trimmed so they do not protrude?
PCU-15/P and PCU-18/P
Which style harness is used to fit personnel below the 5th percentile?
PCU-16/P and PCU-19/P
Which style harness is used to fit personnel below the 5th percentile?
Discretion of Individual Headquarters Command
Who determines the frequency of inspection?
