TM 55-1680-317-23&P
b. Source, Maintenance and Recoverability Codes (SMR).
(1) Source Code. Source codes are assigned to support items to indicate the manner of acquiring support items
for maintenance, repair or overhaul of end items. Source codes are entered in the first and second positions of
the Uniform SMR Code format as follows:
Code
Definition
PA
--
Item procured and stocked for anticipated or known usage.
PB
--
Item procured and stocked for insurance purpose because essentially dictates that a
minimum quantity be available in the supply systems.
PC
--
Item procured and stocked and which otherwise would be coded PA except that it is
deteriorate in nature.
MF
--
Item to be manufactured or fabricated at the direct support maintenance level.
XB
--
Item is not procured or stocked. If not available through salvage, requisition.
AD
--
Item to be assembled at depot maintenance level.
XA
--
Item is not procured or stocked because the requirements for the item will result in
replacement of the next higher assembly.
NOTE
Cannibalization or salvage may be used as a source of supply for any items source
coded above except aircraft support items as restricted by AR 700- 42.
(2) Maintenance Code. Maintenance codes are assigned to indicate the levels of maintenance authorized to USE
and REPAIR support items. The maintenance codes are entered in the third and fourth positions of the
Uniform SMR Code format as follows:
(a) The maintenance code entered in the third position will indicate the lowest maintenance level authorized to
remove, replace and use the support item. The maintenance code entered in the third position will indicate
the following level of maintenance:
Code
Application/Explanation
O
-- Support item is removed, replaced, used at the organizational level.
F -- Support item is removed, replaced, used at the direct support level.
D -- Support item that are removed, replaced, used at the depot level only.
(b) The maintenance code entered in the fourth position indicates whether the item is to be repaired and ide-
maintenance functions). This position will contain one of the following maintenance codes:
F -- The lowest maintenance level capable of complete repair of the support item is
C-2 Change 9
D -- Lowest level maintenance capable of complete repair of the support item.
O -- Lowest maintenance level capable of complete repair of the support item.
Z -- Nonreparable. No repair is authorized.
the direct support level.
Code Application/Explanation
entifies the lowest maintenance level with the capability to perform complete repair (i.e., all authorized
