SECTION I TM 10-3930-255-24P D - 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  repaired and   identifies   the   lowest   maintenance   level   with   the capability to do complete repair (i. ., perform all authorized repair functions.) (NOTE  Some  limited  repair may be done on the item at a lower level of maintenance, if authorized by the Maintenance Allocation Chart (MAC) and  SMR  codes.)  This  position  will  contain  one  of  the following maintenance codes: Code Application/Explanation O - Unit maintenance or Aviation unit is the low est level that can do complete repair of the item F - Direct support or aviation intermediate is the lowest level that can do complete repair of the item. H - General support is the lowest level that can do complete repair of the item. L - Specialized repair activity is the lowest level that can do complete repair of the item. D - Depot is the lowest level that can do complete repair of the item. z - Nonreparable.  No repair is authorized. B - 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, lubrication, etc, at the user level. (3) Recoverability Code.  Recoverability codes are  assigned  to  items  to  indicate  the  disposition  action on   unserviceable    items.        The    recoverability    code    is entered in the fifth position of the SMR Code as follows: Code Application/Explanation Z- Nonreparable item.  When unserviceable, condemn and dispose of the item at the level of maintenance shown in 3d position of the SMR code. 0 - Reparable item.  When uneconomically reparable, condemn and dispose of the item at unit maintenance or aviation unit level. F- Reparable item.  When uneconomically 3 reparable, condemn and dispose of the item at the direct support or aviation intermediate level. H- Reparable item.  When uneconomically reparable, condemn and dispose of the item at the general support level D- Reparable item.  When beyond lower level repair capability, return to depot. Condemnation and disposal of item not authorized below depot level. L- Reparable item.  Condemnation and disposal of item not authorized below specialized repair activity (SRA). A - Item requires special handling or con- demnation procedures because of spe- cific reasons (e.g., precious metal con- tent, high dollar value, critical material, or hazardous material).  Refer to appropriate manuals/directives for specific instructions. c. CAGEC   (Column   (3)).      The   Commercial   And Government    Entity    (CAGE)     Code     (C)     is     a     5-digit alphanumeric     code     which     is     used     to     identify     the manufacturer,   distributor   or   Government   agency,   etc., that supplies the item. d. PART   NUMBER   (Column   (4)).      Indicates   the primary   number   used   by   the   manufacturer   (individual, company,    firm,    corporation    or    Government    activity), which controls the design and characteristics of the item by   means   of   its   engineering   drawings,   specifications standards   and   inspection   requirements   to   identify   an item or range of items. NOTE:  When you use a NSN to requisition an item, the item you receive may have a different part number from the part ordered. e. DESCRIPTIONAND USABLE ON CODE  (UOC) (Column    (5)).        This    column    includes    the    following information: (1) The Federal item name and, when required, a minimum description to identify the item. (2) security   classification.   Not applicable. (3) Items that are included in kits and sets are listed below the name of the kit or set on Figure KIT. (4) Spare/repair    parts    that    make    up    and assembled    item    are    listed    immediately    following    the assembled item line entry.