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 TM 55-4920-328-13
(3)
E
Series Expendable Items
X1
Applied to parts which are not
procured
or
stocked,
the
E
Applied to repair parts which are
requirement for which will be
considered nonsalvageable or
supplied by use of next higher
nonrecoverable and no effort will
assembly or component.
be made by any echelon to return
unserviceable parts for repair.
X2
Applied to repair parts which are
Code E is an internal AVSCOM
not
stocked.
The indicated
Management Code and will not be
maintenance echelon requiring
published in Technical Manuals.
such repair parts will attempt to
obtain from cannibalization. Such
(4)
T
Series Reparable Items
repair parts will be requisitioned
with
supporting
T
Reparable
Applied to higher
through normal channels.
dollar value recoverable
repair
parts which are subject to special
(6)
Z
Series
handling and are issued on an
exchange basis.
Such repair
Z
Applied to obsolete parts, no
parts normally are repaired or
longer stocked or procured.
overhauled at depot maintenance
NOTE: This code is NOT to be
activities.
used for the purpose of indicating
preferential
use of replacing
(5)
X
Series
items or interchangeables. The Z
code will be applied only to items
X
Applied to parts and assemblies
which no longer are authorized to
which are not procured or
be used upon the designated end
stocked; the mortality of which is
article application, components
below that of the applicable end
etc., by reason of engineering
article and the failure of which
change.
should result in retirement of the
end article from service.
d. Maintenance Codes.
XA
Item is not procured or stocked
Maintenance codes indicate the levels of
because the requirements for the
maintenance authorized to USE and REPAIR support
item will result in the replacement
items. The maintenance codes are entered in the third
of the next higher assembly.
and fourth positions of the uniform SMR Code format and
XC
Installation drawing, diagram,
are explained below:
instruction sheet, field source
drawing that is identified by
(1)
The maintenance code in the third
manufacturer's part number.
position indicates the lowest maintenance
level authorized to remove, replace, and use
XD
A support item that is not
the
stocked. When required, item will
be procured through normal
supply channels.
Change 1 3-374
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