T M 9 - 2 3 5 0 - 2 3 8 - 2 4 P -1C o d eE x p l a n a t i onA O - ( A s s e m b l e d byU n i t / A V U M L e v e l)A F - ( A s s e m b l e d b y D S/A V I M L e v e l)A H - ( A s s e m b l e d b y GSL e v e l)A L - ( A s s e m b l e d b yS R A )A D - ( A s s e m b l e d byD e p o t)Items with these codes are not to be requested/requisitioned individually.The parts that make up the assembled item must be requisitioned orfabricated and assembled at the level of maintenance indicated by thesource code. If the 3d position code of the SMR code authorizes you toreplace the item, but the source code indicates the item is assembled ata higher level, order the item from the higher level of maintenance.XA- Do not requisition an “XA’’-coded item. Order its next higher assembly. (Also, refer to theN O T E b e l o w . )XB- lf an “XB” item is not available from salvage, order it using the CAGEC and part number given.XC- Installation drawing, diagram, instruction sheet, field service drawing, that is identified bym a n u f a c t u r e r ’ s p a r t n u m b e r.XD- Item is not stocked. Order an “XD’’-coded item through normal supply channels using theCAGEC and part number given, if no NSN is available.N O T ECannibalization or controlled exchange, when authorized, may be used as a source ofsupply for items with the above source codes, except for those source coded “XA” orthose aircraft support items restricted by requirements of AR 750 -1.( 2 ) M a i n t e n a n c e C o d e . M a i n t e n a n c e(a) T h e m a i n t e n a n c e c o d e e n t e r e d incodes tell you the level(s) of maintenance au-the third position tells you the lowest mainte-thorized to USE and REPAIR support items.nance level authorized to remove, replace, andThe maintenance codes are entered in the thirdu s e a n i t e m . T h e m a i n t e n a n c e c o d e e n t e r e d inand fourth positions of the SMR code as fol-the third position will indicate authorization tol o w s:one of the following levels of maintenance.C o d eA p p l i c a t i o n / E x p l a n a t i onC-Crew or operator maintenance done within unit or aviation unitm a i n t e n a n c e .O-Unit or aviation unit level can remove, replace, and use the item.F-Direct support or aviation intermediate level can remove, replace,and use the item.H-General support level can remove, replace, and use the item.L-Specialized repair activity can remove, replace, and use the item.D-Depot level can remove, replace, and use the item.3
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