TM 55-4920-429-23P
Code
Explanation
Stocked items; use the applicable NSN to request/requisition items these
source codes. They are authorized to the category indicated by the-code
entered in the 3d position of the SMR code.
**NOTE:
Items coded PC are subject to deterioration.
Items with these codes are not to be requested/requisitioned individually.
They are part of a kit which is authorized to the maintenance category in-
dicated in the 3d position of the SMR code. The complete kit must be requisi-
tioned and applied.
(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 in-
dicate 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
-Organizational or aviation unit category can remove, replace, and
use the item.
F
-Direct support or aviation intermediate level can remove, replace,
and use the item.
H
-General support level can remove, replace, and use the item.
L
-Specialized repair activity can remove, replace, and use the item.
D
-Depot level can remove, replace, and use the item.
(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). (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.
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