TM 55-4920-410-13&P
APPENDIX C
REPAIR PARTS AND SPECIAL TOOLS LIST
SECTION I. INTRODUCTION
C-1. Scope. This appendix lists spares and repair parts; special tools; special test, measurement, and
diagnostic equipment (TMDE), and other special support equipment required for performance of Aviation
Unit Maintenance and Aviation Intermediate Maintenance of the System Analyzer Test Set. It authorizes
the requisitioning and issue of spares and repair parts as indicated by the source and maintenance codes.
C-2. General. This Repair Parts and Special Tools List is divided, into the following sections:
a. Section II, Repair Parts List. A list of spares and repair parts authorized for use in the performance of
maintenance. Parts lists are composed of functional groups in numeric sequence, with the parts in each
group listed in figure and item number sequence.
b. Section III, Special Tools List. A list of special tools, special TMDE, and other special support equip-
ment authorized for the performance of maintenance.
c. Section IV, National Stock Number and Part Number Index. A list, in ascending numerical sequence,
of all National stock numbers appearing in the listings, followed by a list, in alphanumeric sequence, of all
reference numbers appearing in the listings. National stock numbers and part numbers are cross-
-referenced to each illustration figure and item number appearance.
C-3. Explanation of Columns.
a. Illustration. This column is divided as follows:
(1) Figure Number.
Indicates the figure number of the illustration on which the item is shown.
(2) Item Number. The number used to identify each item called out in the illustration.
b. Source, Maintenance and Recoverability (SMR) Codes.
(1) Source Code. Source codes indicate the manner of acquiring support items for maintenance, repair
or overhaul of end items. Source codes are entered in the first and second positions of the Uniform SMR
Code format as follows:
Code
Definition
PA
Item Procured and stocked for anticipated or known usage.
PB
Item procured and stocked for insurance purpose because essentiality dictates that a minimum
quantity be available in the supply system.
PC
Item procured and stocked and which otherwise would be coded PA except that it is deteriorative
in nature.
PD
Support item, excluding support equipment, procured for initial issue or outfitting and stocked
only for subsequent or additional initial issues or outfittings. Not subject to automatic
replenishment.
C-1
