TM 10-4610-237-20P(1) SourceCode. The source code tells you how you get an item needed for maintenance, repair, or overhaul ofan end item/equipment. Explanations of source codes follow:Source Code ExplanationPAPBStocked items; use the applicable NSN to request/requisition items with thesePC**source codes. They are authorized to the category indicated by the codePDentered in the 3rd position of the SMR code.PEPF **NOTE: Items coded PC are subject to deterioration.PGKDItems with these codes are not to be requested/requisitioned individually. TheyKF are part of a kit which is authorized to the maintenance category indicated inKBthe 3rd position of the SMR code. The complete kit must be requisitioned andapplied.MO (Made at UNIT/AVUMItems with these codes are not to be requested/requisitionedlevel)individually. They must be made from bulk material which isMF (Made at DS/AVIMidentified by the part number in the DESCRIPTION and USABLElevel)ON CODE (UOC) column and listed in the Bulk Material group of theMH (Made at GS level)repair parts list in the RPSTL. If the item is authorized to you by theML (Made at Specialized3rd position code of the SMR code, but the source code indicates itRepair Activity (SRA))is made at a higher level, order the item from the higher level ofMD (Made at Depot)maintenance.AO (Assembled by org Items with these codes are not to be requested/requisitionedAVUMindividually. The parts that make up the assembled item must beLevel)requisitioned or fabricated and assembled at the level ofAF (Assembled bymaintenance indicated by the source code. If the 3rd position codeDS/AVUMof the SMR code, authorizes you to replace the item, but theLevel)source code indicates the items are assembled at a higher level,AH (Assembled by GSorder the item from the higher level of maintenance.Category)AL (Assembled by SRA)AD (Assembled by Depot)XA - Do not requisition an "XA"-coded item. Order its next higher assembly. (Also, refer to the NOTE below.)XB - If an "XB" item is not available from salvage, order it using the CAGE Code and part number given.XC - Installation drawing, diagram, instruction sheet, field service drawing, that is identified by manufacturer's partnumber.XD - Item is not stocked. Order an "XD"-coded item through normal supply channels using the CAGE Code and partnumber given, if no NSN is available.}}2}}
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