TM   10-5410-224-24P Code Definition XB  Item  is  not  procured  or  stocked. able   through   salvage,   requisition. If  not  avail- XD   A   support   item   that   is   not   stocked.   When   re- quired,   item   will   be   procured   through   normal supply    channels. NOTE Cannibalization   or   salvage   may   be   used   as   a source   of   supply   for   any   items   source   coded above  except  those  coded  XA  or  XD. (2)   Maintenance   Code.   Maintenance   codes   are assigned   to   indicate   the   levels   of   maintenance   author- ized   to   use   and   repair   support   items.   The   mainte- nance   codes   are   entered   in   the   third   and   fourth   posi- tions  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  levels  of maintenance: Code Application/Explanation C Crew   or   operator   maintenance   performed   with- in  organizational  maintenance. O Support   item   is   removed,   replaced,   used   at the   organizational   level. I Support   item   is   removed,   replaced,   used   by the  direct  support  element  of  integrated  direct support   maintenance. 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,  specialized  repair activity   only. NOTE Codes  "I"  and  "F"  will  be  considered  the  same by   direct   support   units. (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  com- plete  repair  of  the  support  item  is  the  organi- zational   level. F The  lowest  maintenance  level  capable  of  com- plete   repair   of   the   support   item   is   the   direct support   level. Code Application/Explanation H D L Z B The  lowest  maintenance  level  capable  of  com- plete  repair  of  the  support  item  is  the  general support   level. The  lowest  maintenance  level  capable  of  com- plete   repair   of   the   support   item   is   the   depot level. Repair   restricted   to   designated   specialized   re- pair   activity. Nonreparable.   No   repair   is   authorized. No  repair  is  authorized.  The  item  may  be  re- conditioned   by   adjusting,   lubricating,   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   disposi- tion   action   on   unserviceable   items.   The   recoverabil- ity  code  is  entered  in  the  fifth  position  of  the  Uniform SMR  Code  format  as  follows: Recoverability Codes Z O F H D L A Definition Nonreparable   item.   When   unserv- iceable,   condemn   and   dispose   at   the level  indicated  in  position  3. Reparable   item. When  uneconomi- cally  reparable,  condemn  and  dispose at  organizational  level. Reparable   item.    When   uneconomi- cally  reparable,  condemn  and  dispose at   the   direct   support   level. Reparable   item.    When   uneconomi- cally  reparable,  condemn  and  dispose at   the   general   support   level. Reparable   item.   When   beyond   lower level   repair   capability,   return   to depot. Condemnation   and   disposal not  authorized  below  depot  level. Reparable   item. Repair,    condem- nation, and   disposal   not   authorized below   depot/specialized   repair   ac- tivity   level. Item   requires   special   handling   or condemnation    procedures    because of   specific   reasons   (i.   e.,   precious metal   content,   high   dollar   value, critical   material   or   hazardous   ma- terial). Refer  to  appropriate  man- uals/directives  for  specific  instruc- tions. c.     National    Stock    Number.    Indicates    the    National stock   number   assigned   to   the   item   and   will   be   used for   requisitioning   purposes. d.   Part   Number. Indicates   the   primary   number used  by  the  manufacturer  which  controls  the  design and  characteristics  of  the  item  by  means  of  its  en- gineering    drawings, specifications   standards,   and inspection   requirements   to   identify   an   item   or   range of  items. iv