TM 9-4931-519-34P
Section I. INTRODUCTION
b. Source, Maintenance, and Recoverability
1. Scope. This manual lists spares and repair parts
(SMR) Codes.
that are required for maintenance of the RF Unit
Controller, Weinschel Model 4302A. It authorizes the
(1) Source Code. Source codes indicate the
requisitioning and issue of spares and repair parts as
manner of acquiring support items for maintenance,
indicated by the source and maintenance codes.
repair, or overhaul of end items. Source codes are
2. General. This repair parts and special tools list
entered in the first and second positions of the Uniform
SMR Code format as follows:
(RPSTL) is divided into the following sections:
Code
Definition
a. Section I. Introduction.
PA -
Item procured and stocked for anticipated or
known usage.
and repair parts authorized for use in the performance of
maintenance. The list also includes parts which must be
PB -
Item procured and stocked for insurance
removed for replacement of the authorized parts. Parts
purpose because essentiality dictates that a
lists are composed of functional groups in numeric
minimum quantity be available in the supply
sequence, with the parts in each group listed in figure
system.
and item number sequence. Bulk materials are listed in
National Stock Number (NSN) sequence.
PC -
Item procured and stocked and which otherwise
would be coded PA except that it is deteriorative
in nature.
in National Item Identification Number (NIIN) sequence,
of all NSN's appearing in the listings, followed by a list in
PD -
Support item, excluding support equipment,
alphanumeric sequence of all part numbers appearing in
procured for initial issue or outfitting and stocked
the listings.
NSN's and part numbers are cross-
only for subsequent or additional initial issues or
referenced to each illustration figure and item number
outfittings. Not subject to automatic replenishment.
appearance.
3. Explanation of Columns
PE -
Support equipment procured and stocked for
initial issue or outfitting to specified maintenance
a. Illustration. This column is divided as follows:
repair activities.
(1) Figure Number.
Indicates the figure
PF -
Support equipment which will not be stocked but
which will be centrally procured on demand.
number of the illustration on which the item is shown.
(2) Item Number.
The number used to
identify item called out in the illustration.
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