Maintenance Code - TM-55-4920-426-13-P0333

TM 55-4920-426-13&P

Explanation

MO- (Made at org/AVUM

Items with these codes are not be be requested/requistioned in-

Level)

dividually. They must be made from bulk material which is iden-

tified by the part number in the DESCRIPTION AND USABLE ON

MF- (Made at DS/AVUM Level)

MH- (Made at GS Level)

CODE (UOC) column and listed in the Bulk Material group of the

repair parts list in this RPSTL. If the item is authorized to you by

ML- (Made at Specialized

Repair Act (SRA)

the 3d position code of the SMR code, but the source code in-

dicates it is made at a higher level, order the item from the higher

MD- (Made at Depot)

level of maintenance.

Items with these codes are not to be requested/requisitioned in-

AO- (Assembled by org/AVUM

dividually. The parts that make up these assembled items must be

Level)

requisitioned or fabricated and assembled at the level of

AF- (Assembled by DS/AVIM

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

Level)

AH- (Assembled by GS

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

Category)

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

AL- (Assembled by SRA)

order the item from the higher level of maintenance.

-(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 re-

quirements of AR 700-42.

(2) Maintenance Code. Maintenance codes tells 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.

Application/Explanation

Code

--Crew or operator maintenance done within organizational or

aviation unit maintenance.

--Organizational or aviation unit category can remove, replace,

and use the item.

C-3