Maintenance Code - TM-55-8145-203-13-P0079

TM 55-8145-203-13&P

Code

Explanation

AO - (Assembled by org/

Items with these codes are not to be requested/requisitioned individually.

AVUM Level)

The parts that make up the assembled item must be requisitioned or

AF - (Assembled by DS/

fabricated and assembled at the level of maintenance indicated by the source

AVIM Level)

code. If the 3rd position code of the SMR code authorizes you to replace the

AH (Assembled by GS

item, but the source code indicates the item is assembled at a higher level,

Category)

order the item from the higher level of maintenance.

AL - (Assembled by SRA)

AD - (Assembled by Depot)

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.

b. 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:

(1) 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.

(2) 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.

Code

Application/Explanation

- Organizational or (aviation unit) is the lowest level that can do complete repair of the item.

- Direct support or aviation intermediate is the lowest level that can do complete repair of

the item.

- General support is the lowest level that can do complete repair of the item.

- Specialized repair activity (designate the specialized repair activity) is the lowest level that

can do complete repair of the item.

- Depot is the lowest level that can do complete repair of the item.

- Nonrepairable. No repair is authorized.

- No repair is authorized. (No parts or special tools are authorized for the maintenance of a "B" coded

item.) However, the item may be reconditioned by adjusting, lubricating, etc., at the user level.

C-3