TM 1-8415-215-12&P Section II.  REPAIR PARTS AND SPECIAL TOOLS LIST GROUP 01.  HELMET ASSEMBLY Figure C-1.  SPH-4B Helmet Assembly ITEM SMR CAGEC PART DESCRIPTION AND USABLE ON CODE (UOC) QTY NO. CODE NUMBER PAOOO 97427 89D7825-1 HELMET ASSY,  REGULAR 1 PAOOO 97427 89D7825-2 HELMET ASSY,  X-LARGE 1 1    PAOOO 97427 90C7930-12 .LIGHTWEIGHT DUAL VISOR ASSY (See fig.  C-2 for breakdown) 1 2 PAOOO 97427 90A7858-1 .HELMET SHELL,  REG. 1 2 PAOOO 97427 90AI858-2 .HELMET SHELL,  X-LARGE 1 3 PAOOO 97427 89D7639-1 .RETENTION ASSY,  0.  G. (See fig.  C-4 for breakdown) 1 4 XAOZZ 97427 306A38 .COMMUNICATION ASSY (REF.) 1 5 PAOOO 97427 85C7136 .EAR CUP ASSY (See fig C-5 for breakdown) 2 6 PAOOO 97427 85D7087-4 .THERMOPLASTIC LINER ASSY,  REG. (See fig.  C-3 for breakdown) 1 6    PAOOO    97427     85D7087-5 .THERMOPLASTIC LINER ASSY,  X-LARGE (See fig.  C-3 for breakdown) 1 7    PAOOO    97427     85D7286-1 .LINER,  ENERGY ABSORBING,  REG. (See fig.  C-3 for breakdown) 1 7    PAOOO    97427     85D7211-1   .LINER,  ENERGY ABSORBING,  X-LARGE (See fig.  C-3 for breakdown) 1 8 PAOZZ 81337 8-2-827 .PAD,  EARCUP CHAFING 2 9 PAOZZ 81337 8-2-814 CROSS STRAP,  EARCUP TENSION 4 10 PAOZZ 81337 8-2-821 ADAPTER CLIP 4 11 PAOZZ 97427 63A1088 .EDGE,  BEADING 1 END OF FIGURE C-1-1