TM 5-4520-224-24P
b. SMR Code (Column (2)). The Source, Maintenance, and Recoverability (SMR) code is a 5-position code
containing supply/requisitioning information, maintenance category authorization criteria, and disposition
instructions, as shown in the following breakout:
How you get an item
3rd position
4th position
Who determines
Who can install,
Who can do
disposition
replace or use
complete repair*
action on an
the item
on the item
unserviceable
item
*Complete Repair: Maintenance capacity, capability, and authority to perform all the corrective maintenance tasks
of the “Repair” function in a use/user environment in order to restore serviceability to a failed item.
(1) Source code. The source code tells you how to get an item needed for maintenance, repair, or overhaul
of an end item/equipment. Explanations of source codes follows:
Code
PA
PB
PC**
PD
PE
PF
PG
KD
KF
KB
Explanation
Stocked items; use the applicable NSN to request/requisition items with these
source codes. They are authorized to the category indicated by the code entered
in the 3rd 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 indicated in the 3rd
position of the SMR code. The complete kit must be requisitioned and applied.
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