O The lowest maintenance level capable of com-
AH-- Item to be assembled at general support main-
plete repair of the support item is the organiza-
AD-- Item to be assembled at depot maintenance
F The lowest maintenance level capable of com-
plete repair of the support item is the direct
XA Item is not procured or stocked because the
requirements for the item will result in the
HThe lowest maintenance level capable of com-
replacement of the next higher assembly.
plete repair of the support item is the general
XB Item is not procured or stocked. If not availa-
ble through salvage, requisition.
D-- The lowest maintenance level capable of com-
XC-- Installation drawing, diagram, instruction
plete repair of the support item is the depot
sheet, field service drawing, that is identi-
fied by manufacturer's part number.
L- Repair restricted to designated specialized re-
XD-- A support item that is not stocked. When re-
quired, item will be procured through nor-
Z Nonreparable. No repair is authorized.
mal supply channels.
B-- No repair is authorized. The item may be recon-
ditioned by adjusting, lubricating, etc., at the
Cannibalization or salvage may be used as
user level. No parts or special tools are pro-
a source of supply for any items source
cured for the maintenance of this item.
coded above except those coded XA and
(3) Recoverability code. Recoverability codes
aircraft support items as restricted by AR
are assigned to support items to indicate the disposi-
tion action on unserviceable items. The recoverabil-
(2) Maintenance code. Maintenance codes are
ity code is entered in the fifth position of the Uniform
assigned to indicate the levels of maintenance autho-
SMR Code format as follows:
rized to USE and REPAIR support items. The main-
tenance codes are entered in the third and fourth
positions of the Uniform SMR Code format as fol-
Z-- Nonreparable item. When unserviceable, con-
demn and dispose at the level indicated in posi-
(a) The maintenance code entered in the third
position will indicate the lowest maintenance level
O-- Reparable item. When uneconomically repara-
authorized to remove, replace, and use the support
ble, condemn and dispose at organizational
item. The maintenance code entered in the third posi-
tion will indicate one of the following levels of mainte-
F-- Reparable item. When uneconomically repara-
ble, condemn and dispose at the direct support
C Crew or operator maintenance performed within
H Reparable item. When uneconomically repara-
ble, condemn and dispose at the general sup-
O Support item is removed, replaced, used at the
D-- Reparable item. When beyond lower level repair
F Support item is removed, replaced, used at the
capability, return to depot. Condemnation and
direct support level.
disposal not authorized below depot level.
H Support item is removed, replaced, used at the
L - Reparable item. Repair, condemnation, and dis-
general support level.
posal not authorized below depot/specialized
D Support items that are removed, replaced, used
repair activity level.
at depot, mobile depot, specialized repair ac-
A-- Item requires special handling or condemnation
procedures because of specific reasons (i.e.,
precious metal content, high dollar value, criti-
(b) The maintenance code entered in the fourth
cal material or hazardous material). Refer to
positions indicates whether the item is to be repaired
appropriate manuals/directives for specific in-
and identifies the lowest maintenance level with the
capability to perform complete repair (i.e., all autho-
rized maintenance functions). This position will con-
c. National Stock Number. Indicates the National
tain one of the following maintenance codes:
stock number assigned to the item and will be used
for requisitioning purposes.