3TM 5-2350-262-24PNOTECannibalization or controlled exchange, when authorized, may be used as a source ofsupply for items with the above source codes except for those items source coded “XA”.d.Maintenance Code.Maintenance codes tell you the level(s) of maintenance authorized to use and repairsupport items. The maintenance codes are entered in the third and fourth positions of the SMR code asfollows:(1)THIRDPOSITION.The maintenance code entered in the third position tells you the lowestmaintenance level authorized to remove, replace, and use an item. The maintenance code entered inthe third position will indicate authorization to the following levels of maintenance:3.EXPLANATION OF COLUMNS IN THE REPAIR PARTS LIST AND SPECIAL TOOLSLIST WORK PACKAGE (Continued).XAXBXCXDDo not requisition an “XA” coded item.Order the next higher assembly (refer toNOTE below).If an item is not available from salvage,order it using the CAGE Code and P/N.Installation drawings, diagrams, instructionsheets, field services drawings; identified bymanufacturer’s P/N.Item is not stocked. Order an XD-codeditem through normal supply channels usingthe CAGE Code and P/N given, if no NSNis available.AO-Assembled byunit/AVUM levelAF-Assembled byDS/AVUM levelAH-Assembled byGS levelAL-Assembled bySRAAD-Assembled bydepotItems with these codes are not to berequested/requisitioned individually. Theparts that make up the assembled item mustbe requisitioned or fabricated andassembled at the level of maintenanceindicated by the source code. If the 3rdposition of the SMR code authorizes you toreplace the item, but the source codeindicates the item is assembled at a higherlevel, order the item from the higher levelof maintenance.
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