Maintenance Code - TM-5-4120-393-24P0013

Explanation

Items with these codes are not to be requested/requisi-

tioned individually. The parts that make up the assembled

item must be requisitioned or fabricated and assembled

at the level of maintenance indicated by the source code.

If the 3d position code of the SMR code authorizes you

to replace the item, but the source code indicates the

items are assembled at a higher level, order the item

from the higher level of maintenance.

Explanation

Code

XA -- Do not requisition an "XA"-coded item. Order its next higher assembly. (Also,

refer to the NOTE below.)

XB -- If an "XB" item is not available from salvage, order it using the FSCM and

part number given.

X C - - I n s t a l l a t i o n drawing, diagram, instruction sheet, field service drawing, that

is identified by manufacturer's part number.

XD -- Item is not stocked. Order an "XD"-coded item through normal supply channels

using the FSCM and part number given, if no NSN is available.

NOTE

Cannibalization or controlled exchange, when authorized,

may be used as a source of supply for items with the above

source codes, except for those source coded "XA" or those

aircraft support items restricted by requirements of AR

750-1.

(2) Maintenance Code. Maintenance codes tells you the level(s) of mainte-

nance authorized to USE and REPAIR support items. The maintenance

codes are entered in the third and fourth positions of the SMR code

a s follows:

(a) The maintenance code entered in the third position tells you

the lowest maintenance level authorized to remove, replace,

and use an item. The maintenance code entered in the third

p o s i t i o n will indicate authorization to one of the following

levels of maintenance.

Application/Explanation

Code

--Crew or operator maintenance done within organizational

or aviation unit maintenance.

--Organizational or aviation unit category can remove,

replace, and use the item.

--Direct support or aviation intermediate level can remove,

replace, and use the item.