Maintenance Code. - TM-55-4920-442-13-P0195

TM 55-4920-442-13&P

Code

Explanation

AO (Assembled by org/

Items with these codes are not to be requested/requisitioned

}

AVUM

individually. The parts that make up the assembled item must be

Level)

requisitioned or fabricated and assembled at the level of

AF (Assembled by

maintenance indicated by the source code. If the 3rd position code

DS/AVUM

of the SMR code, authorizes you to replace the item, but the

Level)

source code indicates the items are assembled at a higher level,

AH (Assembled by GS

order the item from the higher level of maintenance.

Category)

AL (Assembled by SRA)

AD (Assembled by Depot)

Code

Explanation

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 750-1

(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

the following levels of maintenance.

Maintenance

Code

Application/Explanation

C - Crew or operator maintenance done within unit/AVUM maintenance.

O - Unit level/AVUM maintenance can remove, replace, and use the item.

F - Direct support/AVIM maintenance can remove, replace, and use the item.

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

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

D - Depot 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). This position will contain one of the following maintenance codes.

C-3