TM 5-5430-219-23PSourceApplication/ExplanationCodePAPBStock items; use the applicable NSN to request/requisition items with these source codes.PC**They are authorized to the category indicated by the code entered in the 3rd position of thePDSMR code.PEPF**NOTE: Items coded PC are subject to deterioration.PGKDItems with these codes are not to be requested/requisitioned individually. They are part of aKFkit which is authorized to the maintenance level indicated in the 3rd position of the SMRKBcode. The complete kit must be requisitioned and applied.MO(Made at Unit/AVUM Level)MFMH(Made at GS Level)ML(Made at Specialized RepairActivity (SRA))MD(Made at Depot)AO(Assembled by Unit/AVUMLevel)AF(Assembled by DS/AVIMLevel)AL(Assembled by SRA)AD(Assembled by Depot)XADo not requisition an "XA"-coded item Order its next higher assembly. (Refer to the NOTE below.)XBIf an "XB" item is not available from salvage, order it using the CAGEC and part number.XCInstallation drawing, diagrams, instruction sheet, field service drawing, that is identified by manufacturer's partnumber.XDItem is not stocked. Order an "XD"-coded item through normal supply channels using the CAGEC and part numbergiven, if no NSN is available.NOTECannibalization or controlled exchange, when authorized, may be used as a sourceof supply for items with the above source codes, except for those source coded"XA" or those aircraft support items restricted by requirements of AR 750-1.(2)MaintenanceCode. Maintenance codes tell you the level(s) of maintenance authorized to USE andREPAIR support items. The maintenance codes are entered in the third and fourth positions of the SMR code as follows:Items with these codes are not to be requested/requisitionedindividually. They must be made from bulk material which isidentified by the part number in the DESCRIPTION and USABLEON CODE (UOC) column and listed in the Bulk Material group ofthe repair parts list in the RPSTL. If the item is authorized to you bythe 3rd position code of the SMR code, but the source codeindicates it is made at a higher level, order the item from the higherlevel of maintenance.Items with these codes are not to be requested/requisitioned individually. The parts that make up the assembled item must berequisitioned or fabricated and assembled at the level ofmaintenance indicated by the source code. If the 3rd position codeof the SMR code authorizes you to replace the item, but the sourcecode indicates the items are assembled at a higher level, order theitem from the higher level of maintenance.2
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