Definition An  item  of  depot  overhaul/repair  kit and  not  purchased  separately.  Depot kit defined as a kit that provides items required  at  the  time  of  overhaul  or repair, An  item  of  maintenance  kit  and  not purchased  separately.  Maintenance  kit defined  as  a  kit  that  provides  an  item that  can  be  replaced  at  organizational or intermediate levels of maintenance. Item included in both a depot overhaul repair  kit  and  a  maintenance  kit. Item  to  be  manufactured  or  fabricated at the organizational level. Item  to  be  manufactured  or  fabricated at  the  direct  support  maintenance level. MH MD A O A F A H AD XA XB X C XD Cannibalization or salvaging may be used as   a   source   of   supply   for   any   items source  coded  above  except  those  coded XA and XD. E - 2 Item  to  be  manufactured  or  fabricated at  the  general  support  maintenance level. Item  to  be  manufactured  or  fabricated at the depot support maintenance level. Item to be assembled at organizational level. Item  to  be  assembled  at  the  direct support maintenance level. Item   to   be   assembled support maintenance level. Item   to   be   assembled maintenance level. at   general at   depot Item   is   not   procured   or   stocked because  the  requirements  for  the  item will  result  in  the  replacement  of  the next higher assembly. Item  is  not  procured  or  stocked.  If  not available through salvage, requisition. Installation   drawing,   diagram,   in- struction  sheet,  field  service  drawing, that  is  identified  by  manufacturer’s part number. A  support  item  that  is  not  stocked. When  required,  item  will  be  procured through normal supply channels. NOTE (2) Maintenance  Code. Maintenance codes are assigned   to   indicate   the   levels   of   maintenance authorized  to  USE  and  REPAIR  support  items. The  maintenance  codes  are  entered  in  the  third  and fourth positions of the Uniform SMR Code format as follows: (a)  The   maintenance   code   entered   in   the third position will indicate the lowest maintenance level  authorized  to  remove,  replace,  and  use  the support item. The maintenance code entered in the third  position  will  indicate  one  of  the  following levels of maintenance. Code C O F H D Application/Explanation Crew   or   operator   maintenance performed  within  organizational maintenance. Support   item   is   removed,   replaced, used at the organizational level. Support   item   is   removed,   replaced, used at the direct support level. Support   item   is   removed,   replaced, used at the general support level. Support  items  that  are  removed, replaced,  used  at  depot,  mobile  depot, or specialized repair activity only. (b)  The   maintenance   code   entered   in   the fourth position indicates whether the item is to be repaired   and   identifies   the   lowest   maintenance level  with  the  capability  to  perform  complete repair (i.e., all authorized maintenance functions). This   position   will   contain   one   of   the   following maintenance codes: Code Application/Explanation O The  lowest  maintenance  level  capable of  complete  repair  of  the  support  item is the organizational level. F The  lowest  maintenance  level  capable of  complete  repair  of  the  support  item is the direct support level. H The  lowest  maintenance  level  capable of  complete  repair  of  the  support  item is the general support level, D The  lowest  maintenance  level  capable of  complete  repair  of  the  support  item is the depot level. L Repair   restricted   to   designated, Specialized  Repair  Activity.