TM 5-4120-347-24P CODE DEFINITION MD Item to be manufactured or fabricated at the depot maintenance level. AO Item to be assembled at organizational level. AF Item    to    be    assembled    at    direct    support maintenance level. AH Item   to  be   assembled   at   general   support maintenance level. AD Item to be assembled at depot maintenance level. XA Item is not procured or stocked because the requirements  for  the  item  will  result  in  the replacement of the next higher assembly. XB Item   is   not   procured   or   stocked.      If   not available through salvage, requisition. XC Installation     drawing,     diagram,     instruction sheet, field service drawing, that is identified by manufacturer's part number. XD A  support  item  that  is  not  stocked.    When required    item    will    be    procured    through normal supply channels. NOTE Cannibalization   or   salvage   may   be used  as  a  source  of  supply  for  any items    coded    above    except    those coded  XA  and  aircraft  support  items as restricted 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 support item. The  maintenance  code  entered  in  the  third  position  will indicate one of the following levels of maintenance: CODE APPLICATION/EXPLANATION C Crew   or   operator   maintenance   performed within organizational maintenance. O Support  item  is  removed,  replaced,  used  at the organizational level. CODE APPLICATION/EXPLANATION 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,  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 (enter applicable designated specialized repair activity), Specialized Repair Activity. Z Nonrepairable.  No repair is authorized. B No  repair  is  authorized.    The  item  may  be reconditioned  by  adjusting,  lubricating,  etc., at the user level.  No parts 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  recoverability  code is entered in the fifth position of the Uniform SMR Code Format as follows: RECOVERABILITY CODE DEFINITION Z Nonrepairable    item.    When    unserviceable, condemn  and  dispose  at  the  level  indicated in position 3. 2