Section IV Cross-reference Indexes - TM-10-3930-621-24P0010

TM 10-3930-621-24P

XC-

Installation drawing, diagram, instruction

Code

Application/Explanation

sheet, field service drawing, that is identified

Stocked items; use the applicable NSN to

by the manufacturer's part number.

request/requisition items with these source

XD-

Item is not stocked. Order an "XD"-coded

codes. They are authorized to the category

PC**

item through normal supply channels using

indicated by the code entered in the 3d

the CAGE and part number given, if no NSN

position of the SMR code.

is available.

NOTE: Cannibalization or controlled exchange, when

** Items coded

are

subject

authorized, may be used as a source of supply for items

deterioration.

with the above source codes, except for those source

coded "XA" or those aircraft support items restricted by

Items with these codes are not to be

requirements of AR 700-42.

requested/requisitioned individually. They

are part of a kit which is authorized to the

(2) Maintenance Code. Maintenance codes tell

maintenance category indicated in the 3d

you the level(s) of maintenance authorized to USE and

position of the SMR code. The complete kit

REPAIR support items. The maintenance codes are en-

must be requisitioned and applied.

tered in the third and fourth positions of the SMR code as

follows:

MO-(Made at UM/

Items with these codes are not to

(a) The maintenance code entered in the

AVUM Level)

requested/requisitioned

third position tells you the lowest maintenance level

individually. They must be made

MF-(Made at DS/

authorized to remove, replace, and use an item. The

from bulk material which is

AVUM Level)

maintenance code entered in the third position will indi-

identified by the part number in

MH-(Made at GS

cate authorization to one of the following levels of

the DESCRIPTION AND USABLE

Level)

maintenance.

ON CODE (UOC) column and

ML-(Made at Spe-

listed in the Bulk Material group

Application/Explanation

Code

cialized Repair

of the repair pans list in this

Activity (SRA))

C-

Crew or operator maintenance done within

RPSTL. If the item is authorized

unit maintenance or aviation unit mainte-

MD-(Made at

to you by the 3d position code of

nance.

Depot)

the SMR code, but the source

O-

code indicates it is made at a

Unit maintenance or aviation unit category

higher level, order the item from

can remove, replace, and use the item.

the higher level of maintenance.

F-

Direct support or aviation intermediate level

can remove, replace, and use the item.

Items with these codes are not to

H-

General support level can remove, replace,

requested/requisitioned

AO-(Assembled by

and use the item.

individually. me parts that make

UM/ AVUM

up the assembled item must be

L-

Specialized repair activity can remove, re-

Level)

requisitioned or fabricated and

place, and use the item.

assembled at the level of

AF-(Assembled by

D-

Depot level can remove, replace, and use

maintenance indicted by the

DS/AVIM

the item.

source code, If the 3d position

Level)

code of the SMR code

(b) The maintenance code entered in the

AH-(Assembled by

authorizes you to replace the

fourth position tells whether or not the item is to be re-

GS Category)

item, but the source code

paired and identifies the lowest maintenance level with

AL-(Assembled by

indicates the item is assembled

the capability to do complete repair (i.e., perform all

SRA)

at a higher level, order the item

authorized repair functions). (NOTE: Some limited re-

AD-(Assembled by

from the higher level of

pair may be done on the item at a lower level of

Depot)

maintenance.

maintenance, if authorized by the Maintenance Alloca-

tion Chart (MAC) and SMR codes.) This position will

contain one of the following maintenance codes:

Application/Explanation

Code

XA-

Do not requisition an "XA"-coded item. Or-

O-

Unit maintenance or aviation unit is the low-

der its next higher assembly. (Also refer to

est level that can do complete repair of the

the NOTE following.)

item.

F-

Direct support or aviation intermediate is the

XB-

If an "XB" item is not available from salvage,

lowest level than can do complete repair of

order it using the CAGE and part number

the item.

given.