TM 10-4610-243-23P(1) SourceCode. The source code tells you how to get an item needed for maintenance, repair, oroverhaul of an end item/equipment. Explanations of source codes follows:Source ExplanationCodePAPBPC**Stocked items; use the applicable NSN to request /requisition items with these source codes.PDThey are authorized to the category indicated by the code entered in the 3rd position of thePESMR code.PF**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 category indicated in the 3rd position of the SMRKBcode. The complete kit must be requisitioned and applied.MOMade at Unit/AVUM Level) Items with these codes are not to be requested/requisitionedindividually. They must be made from bulk material which isMF(Made at DS/AVIM Level )identified by the part number in the DESCRIPTION andMH(Made at GS Level)USABLE ON CODE (UOC) column and listed in the BulkML(Made at Specialized RepairMaterial group of the repair parts list in this RPSTL. If theActivity (SRA))item is authorized to you by the 3rd position code of theMD(Made at Depot)SMR code, but the source code indicates it is made at a higherlevel, order the item from the higher level of maintenance.AO(Assembled by Unit/AVUMItems with these codes are not to be requested/requisitioned in-Level)dividually. The parts that make up the assembled item mustbe requisitioned or fabricated and assembled at the level ofAF(Assembled by DS/AVIMmaintenance indicated by the source code. If the 3rd positionLevel Dcode of the SMR code authorizes you to replace the item, butAH(Assembled by GS Category)the source code indicates the items are assembled at a higherAL(Assembled by SRA.Level, order the item from the higher level of maintenance.AD(Assembled by Depot)XADo not requisition 'XA"-coded item. Order its next higher assembly. (Refer to the NOTE-below.)XBIf an UXBE item is not available from salvage, order it using the CAGEC and part number given.XCInstallation drawing, diagram, instruction sheet, field service drawing, that is identified manufacturer's partnumber.XDItem is not stocked. Order an "XD"-coded item through normal supply channels using the CAGEC andpart number given, 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 codeas follows:}}}}2
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