TM   55-2840-241-23 able    skills,    tools,    and    equipment.    Established    the Direct   Exchange   (DX)   program   for   AVUM   unite   by repairing   selected   items   for   return   to   stock   when such   repairs   cannot   be   accomplished   at   the   AVUM level.   Inspects,   troubleshoots,   tests,   diagnoses,   re- pairs,   adjusts,   calibrates,   and   aligns   aircraft   system modules/components.   AVIM   units   will   have   capa- bility    to    determine    the    serviceability    of    specified modules/components   removed   prior   to   the   ex- piration   of   the   Time   Between   Overhaul   (TBO)   or   fi- nite    life.    Module/component    disassembly    and    repair will   support   the   DX   program   and   will   normally   be limited   to   task   requiring   cleaning   and   the   replace- ment   of   seals,   fittings   and   items   of   common   hard- ware,   Airframe   repair   and   fabrication   of   parts   will be   limited   to   those   maintenance   tasks   which   can   be performed   with   available   tools   and   test   equipment. Unserviceable   reparable   modules/components   and end   items   which   are   beyond   the   capability   of   AVIM to   repair   will   be   evacuated   to   Depot   Maintenance. This   level   will   perform   aircraft   weight   and   balance inspections    and    other    special    inspections    which    ex- ceed   AVUM   capability.   Provides   quick   response maintenance   support,   including   aircraft   recovery and    air    evacuation    on-the-job    training,    and    tech- nical   assistance   through   the   use   of   mobile   mainte- nance    contact    teams.    Maintain    authorized    oper- ational   readiness   float   aircraft.   Provides   collection and    classification    services    for    serviceable/un- serviceable   material.   Operates   a   cannibalization   ac- tivity   in   accordance   with   AR   750-50.   (The   aircraft maintenance   company   within   the   maintenance   bat- talion   of   a   division   will   perform   AVIM   functions consistent   with   air   mobility   requirements   and   con- servation   of   personnel   and   equipment   resources. Additional   intermediate   maintenance   support   will be   provided   by   the   supporting   nondivisional   AVIM unit). B-2.   Use   of   the   Maintenance   Allocation   Chart a.  The    Maintenance    Allocation    Chart    assigns maintenance   functions   based   on   past   experience and   the   following   consideration: (1)  Skills    available. (2)  Time    required. (3)  Tools   and   test   equipment   required   and/or available. b.  The   assigned   levels   of   maintenance   author- ized    to    perform    a    maintenance    functions    is    indi- cated. c.  A   maintenance   function   assigned   to   a   lower maintenance   level   to maintenance     level. be   performed   at   any   higher d.  A   maintenance   function   that   cannot   be   per- formed   at   the   assigned   level   of   maintenance   for   any reason   may   be   evacuated   to   the   next   higher   mainte- nance   organization.   Higher   maintenance   levels   will perform   the   maintenance   functions   of   lower   main- tenance   levels   when   required   or   directed   by   the   ap- propriate    commander. e.  The    assignment    of    a    maintenance    function will   not   be   construed   as   authorization   to   carry   the associated   repair   parts   in   stock.   Information   to   req- uisition   or   otherwise   secure   the   necessary   repair parts   will   be   specified   in   the   Repair   Parts,   and   Spe- cial   Tools   List. f.  Normally   there   will   be   no   deviation   from   the assigned   level   of   maintenance,   In   cases   of   oper- ational   necessity,   maintenance   functions   assigned to   a   higher   maintenance   level   may,   on   a   one-time basis   and   at   the   request   of   the   lower   maintenance level,   be   specifically   authorized   by   the   maintenance officer   of   the   higher   level   of   maintenance   to   which the   functions   is   assigned.   The   special   tools,   equip- ment,   etc.   required   by   the   lower   level   of   mainte- nance   to   perform   this   function   will   be   furnished   by the   maintenance   level   to   which   the   function   is   as- signed.   This   transfer   of   a   maintenance   function   to   a lower   maintenance   level   does   not   relieve   the   higher maintenance   level   of   the   responsibility   of   the   func- tion.   The   higher   level   of   maintenance   has   the authority   to   determine: (1)  If   the   lower   level   is   capable   of   perform- ing   the   work. (2)  If   the   lower   level   will   require   assistance or    technical    supervision    and    on-site    inspection. (3)  If   the   authorization   will   be   granted. g.  Maintenance    of    the    US    Army    Commu- nications   and   Electronics   Material   Readiness   Com- mand   equipment   will   be   performed   by   designated US   Army   CERCOM   personnel. h.  Changes   to   the   Maintenance   Allocation   Chart will   be   based   on   continuing   evaluation   and   analysis by   responsible   technical   personnel   and   on   reports received   from   field   activities. B-3.   Definitions. Maintenance    functions.    Maintenance    functions will   be   limited   to   and   defined   as   follows: a.   Inspect. To   determine   the   serviceability   of an   item   by   comparing   its   physical,   mechnical   and/ or    electrical    characteristics    with    established    stan- dards    through    examination. B-2 Change  14