TM 55-8115-200-23&PNOTECannibalization or controlled exchange, when authorized, maybe 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) Maintenance Code. Maintenance codes tells 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 asfollows:(a) The maintenance code entered in the third position tells you the lowest maintenance level autho-rized to remove, replace, and use an item. The maintenance code entered in the third position will indicate authoriza-tion to one of the following levels of maintenance.CodeApplication/ExplanationC-O-F-H-L -D-Crew or operator maintenance done with unit or aviation unit maintenance.Unit or aviation unit category can remove, replace, and use the item.Direct support or aviation intermediate level can remove, replace, and use the item.General support level can remove, replace, and use the item.Specialized repair activity can remove, replace, and use the item.Depot level can remove, replace, and use the item.(b) The maintenance code entered in the fourth position tells whether or not the item is to be repairedand identifies the lowest maintenance level with the capability to do complete repair (i.e., perform all authorized repairfunctions.) NOTE: Some limited repair maybe done on the item at a lower level of maintenance, if authorized by theMaintenance Allocation Chart (MAC) and SMR codes. This position will contain one of the following maintenancecodes.CodeO-F-H-L -D-Z -B-Application/ExplanationUnit or (aviation unit) is the lowest level that can do complete repair of the item.Direct support or aviation intermediate is the lowest level that can do complete repair of the item.General Support is the lowest level that can do complete repair of the item.Specialized repair activity is the lowest level that can do complete repair of the item.Depot is the lowest level that can do complete repair of the item.Nonreparable. No repair is authorized.No repair is authorized. (No parts or special tools are authorized for the maintenance of a “B” coded Item).However, the item may be reconditioned by adjusting, lubricating, etc., at the user level.(3) Recoverability Code.Recoverability codes are assigned to items to indicate the disposition action onunserviceable items. The recoverability code is entered in the fifth position of the SMR Code as follows:C-3
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