MWO 1-8415-216-20-1
1. PURPOSE. To modify the HGU-56/P helmet assembly with the Communications Earplug
(CEP), which will increase communications intelligibility while affording a level of hearing
protection comparable to that of foam earplugs.
2. PRIORITY. The modification is classified ROUTINE.
NATIONAL STOCK
NOMENCLATURE
CAGE
PART NUMBER
NUMBER
Helmet Assembly: XXS
97427
1680-ALSE-101-1
Helmet Assembly: XS
97427
1680-ALSE-101-2
Helmet Assembly: S
8 415-01-394-8036
97427
1680-ALSE-101-3
Helmet Assembly: M
8 415-01-394-8034
97427
1680-ALSE-1014
Helmet Assembly: L
97427
1680-ALSE-101-5
Helmet Assembly: XL
97427
1680-ALSE-101-6
NATIONAL STOCK
NOMENCLATURE
CAGE
PART NUMBER
NUMBER
97427
1680-ALSE-105-1
Shell Subassembly: S
8 415-01-395-2190
97427
1680-ALSE-1052
Shell Subassembly: M
97427
1680-ALSE-105-3
Shell Subassembly: L
97427
1680-ALSE-105-4
Shell Subassembly: XL
8415-01-395-6841
97427
1680-ALSE-170-1or
Earcup Assembly
(for 1680-ALSE-170-1
98C10338-1
5. PARTS TO BE MODIFIED. The following items, whether installed or in PLUASL or deport
stock, shall be modified: Earcup Shell, and Cord Assembly, Electrical.
NATIONAL STOCK
CAGE
PART NUMBER
NUMBER
97427
5965-01-390-8873 (for 1680-
1680-ALSE-171-1or
Earcup Shell
ALSE-17 1-1) or 8415-01-465-
98C10337-1
3396 (for 98C10337-1)
1680-ALSE-210-1
97427
2
