Maintenance Code - TM-55-1740-202-13-P0075

TM 55-1740-202-13&P

Code

Explanation

Items with these codes are not to be requested/requisitioned

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 item is assembled at a 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 the NOTE below.)

XB -

If an "XB" item is not available from salvage, order it using the FSCM and part number given.

XC-

Installation 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 700-42.

(2) Maintenance Code. Maintenance codes tell you the level(s) of maintenance authorized to USE and

REPAIR support items. The maintenance codes are entered in the third and fourth positions of the SMR Code as

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 position will indicate authorization to

one of the following levels of maintenance.

Code

Application/Explanation

- 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.

- General support level can remove, replace, and use the item.

- Specialized repair activity can remove, replace, and use the item.

- Depot level can remove, replace, and use the item.

(b) The maintenance code entered in the fourth position tells whether or not the item is to be repaired

and identifies the lowest maintenance level with the capability to do complete repair (i.e., perform all authorized repair

functions.) (NOTE: Some limited repair may be done on the item at a lower level of maintenance, if authorized by the

Maintenance Allocation Chart (MAC) and SMR codes.) This position will contain one of the following maintenance codes.

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