Maintenance Code - TM-10-3930-658-24P0010

TM 10-3930-658-24P

Explanation of Columns (Sections II and Ill) (Con't).

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 CAGE and part number

given, if no NSN is available.

(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 unit maintenance or aviation unit

maintenance.

- Unit maintenance or aviation unit 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.

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.

(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:

Code

Application/Explanation

- Unit maintenance or aviation unit is the lowest level that can do complete repair

of the item.

- Direct support or aviation intermediate is the lowest level than can do complete

repair of the item.

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

- 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.

- Nonreparable. 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.

Change 1 3