Source Code - continued

TM9 4120-423-14&P

Source Code

Application/Explanation

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

AO- Assembled by unit/AVUM

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

level, AF- Assembled by

fabricated and assembled at the level of maintenance indicated by the

DS/AVIM level, AH- Assembled

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

by GS level, AL- Assembled by

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

SRA, AD- Assembled by depot

level, order the item from the higher level of maintenance.

Do not requisition an "XA" coded item. Order the next higher assembly.

(Refer to NOTE below.)

If an item is not available from salvage, order it using the CAGEC and P/N.

Installation drawings, diagrams, instruction sheets, field service drawings;

identified by manufacturer's P/N.

Item is not stocked. Order an XD-coded item through normal supply

channels using the CAGEC and P/N 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 items source coded "XA" or those aircraft support items

restricted by requirements of AR 750-1.

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:

Third Position. 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:

0100 00-3