TM 5-4120-351-24P Code KB MO MF MH MD AO AF AH AD XA XB XC XD Definition Item  included  in  both  a  depot  over- haul/repair kit and a maintenance kit. Item to be manufactured or fabricated at organizational level. Item to be manufactured or fabricated at   the   direct   support   maintenance level. Item to be manufactured or fabricated at  the  general  support  maintenance level. Item to be manufactured or fabricated at the depot maintenance level. Item to be assembled at organizational level. Item to be assembled at direct support maintenance level. Item  to  be  assembled  at  general  sup- port maintenance level. Item to be assembled at depot mainte- nance level. Item  is  not  procured  or  stocked  be- cause  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: Cannibalization or salvage maybe used as a source  of  supply  for  any  items  coded  above  except those  coded  XA  and  aircraft  support  items  as  re- stricted by AR 700-42. (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  sup- port  item.  The  maintenance  code  entered  in  the third position will indicate one of the following lev- els of maintenance: Code Application/Explanation C O Crew   or   operator   maintenance   per- formed    within    organizational maintenance. Support   item   is   removed,   replaced, used at the organizational level. F Support   item   is   removed,   replaced, used at the direct support level. H Support   item   is   removed,   replaced, used at the general support level. D Support  items  that  are  removed,  re- placed, used at depot, mobile depot, or specialized 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  mainte- nance  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  (enter  applicable designated   specialized   repair   activity), Specialized Repair Activity. Z Nonreparable. No repair is authorized. B No repair is authorized. The item may be  reconditioned  by  adjusting,  lubri- cating, etc., at the user level. No parts or  special  tools  are  procured  for  the maintenance of this item. (3)  Recoverability  Code.  Recoverability codes are assigned to support items to indicate the disposition  action  on  unserviceable  items.  The  re- coverability  code  is  entered  in  the  fifth  position  of the Uniform SMR Code format as follows: 2