TB 9-6115-644-13
C- 3. EXPLANATION OF COLUMNS (Section II) (Con't)
Installation drawing, diagram, instruction sheet, field service drawing that is identified by
XC
manufacture's part number
Stocked items; use the applicable NSN to request/requisition items with these codes. They are
PA
authorized to the category indicated by the code in the 3rd position of the SMR code.
Items with these codes are not to be requested/requisitioned individually. They must be made
MO - (Made at
from bulk material, which is identified by the NSN or part number in the Bulk Material group of
Unit Level)
the repair parts list in this manual. If the item is authorized to you by the 3rd position code of
the SMR code, but the source code indicates it is made at a higher level, order the item from the
MF - (Made at
higher level of maintenance.
DS Level)
Items with these codes are not to be requested/requisitioned individually. The parts that make up
AO -
the assembled item must be requisitioned or fabricated and assembled at the level of
(Assembled at
maintenance indicated by the source code. If the 3rd position code of the SMR code authorizes
Unit Level)
AF -
you to replace the item, but the source code indicates the item is assembled at a higher level,
(Assembled at
order the item from the higher level of maintenance.
Direct Support)
NOTE
Cannibalization when authorized may be used as a source of supply
for items with the above source codes.
(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:
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
C
-Crew or operator maintenance done within organizational or aviation unit maintenance.
O
-Unit maintenance can remove, replace, and use the item.
F
-Direct support or aviation intermediate level can remove, replace, and use the item.
The maintenance code entered in the fourth position tells you 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).
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. This position will contain one of the
following maintenance codes.
C-3
