TM 3-4310-100-20 & P
APPENDIX C
ORGANIZATIONAL MAINTENANCE REPAIR PARTS
AND SPECIAL TOOLS' LISTS
Section I. INTRODUCTION
b. Source, Maintenance, and Recoverability
C-1. Scope
(SMR) Codes.
This appendix lists spares and repair parts; special tools;
(1) Source Code. Source codes indicate the
special test, measurement, and diagnostic equipment
(TMDE), and other special support equipment required
manner acquiring support items for maintenance, repair,
for performance of organizational, direct support, and
or overhaul of end items. Source codes are entered in
general
support
maintenance
of
the
AN-M4
the first and second positions of the Uniform SMR Code
Compressors. It authorizes the requisitioning and issue
format as follows:
of spares and repair parts as indicated by the source and
Definitions
maintenance codes.
PA--Item procured and stocked for anticipated or known
usage.
PB--Item procured and stocked for. insurance purpose
C-2. General
because essentially dictates that a minimum
This Repair Parts and Special Tools List Is divided into
quantity be available in the supply system.
the following sections:
PC--Item procured and stocked and which otherwise
a. Section II. Repair Parts List. A list of spares
would be coded PA except that it is deteriorative in
and repair parts authorized for use in the performance of
nature.
maintenance. The list also includes parts which must be
PD--Support item, excluding support equipment,
removed for replacement of the authorized parts. Parts
procured for initial issue or outfitting and stocked
lists are composed of functional groups in numeric
only for subsequent or additional initial issues or
sequence, with the parts in each group listed in figure
outfittings. Not subject to automatic replenishment.
and item number sequence.
PE--Support' equipment procured and-stocked for initial
b. Section III.
Special Tools List.
Not
issue or outfitting to specified maintenance repair
applicable.
activities.
c. Section IV. National Stock Number and Part
PF--Support equipment which' will not be stocked but
Number Index. A list, in National item identification
which will be centrally procured on demand.
number (NIIN) sequence, of all National stock numbers
PG--Item procured and stocked to provide for sustained
(NSN) appearing in the listings, followed by a list in
support for the life of the equipment. It is applied to
alphanumeric sequence of all part numbers appearing in
an item peculiar to the equipment which, because
the listings. National stock numbers and part numbers
of probable discontinuance or shutdown of
are cross-referenced to each illustration figure and item
production facilities, would prove uneconomical to
number appearance. This index is followed by a cross-
reproduce at a later time.
reference list of reference designators to figure and item
KD--An item of a depot overhaul/repair kit and not
numbers.
purchased separately. Depot kit defined as a kit
that provides items required at the time of overhaul
C-3. Explanation of Columns
or repair.
a. Illustration. This column is divided as follows:
KF--An item of a maintenance kit and not purchased
(1) Figure number.
Indicates the figure
separately. Maintenance kit defined as a kit that
number of the illustration on which the item is shown.
provides an item that can be replaced at
(2) Item Number. The number used to
organizational
or
intermediate
levels
of
identify item called out in the illustration.
maintenance.
C-1
