Maintenance Code - TM-55-4920-433-13-P0096

TM 55-4920-433-13&P

Code

Explanation

AO - (Assembled by

Items with these codes are not to be requested/requistioned

org/AVUM Cate-

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

gory)

requisitioned or fabricated and assembled at the category f

AF - (Assembled by

maintenance indicated by the source code. If the 3d position code of

(DS/AVIM Cate-

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

gory)

code indicates the item is assembled at a higher category, order the

AH - (Assembled by

item from the higher category of maintenance.

GS Category)

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 frm 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 category(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 category authorized

to remove, replace, and use an item. The maintenance code entered in the third position will indicate authorization to

one of the following categories 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 category can

remove, replace, and use the item.

- General support category can remove, replace, and use the

item.

C-3