TM 55-1660-320-23 & P
APPENDIX C
AVIATION UNIT AND INTERMEDIATE MAINTENANCE
REPAIR PARTS AND SPECIAL TOOLS LIST
(INCLUDING DEPOT MAINTENANCE REPAIR PARTS)
Section I. INTRODUCTION
C-1. Scope. This RPSTL lists and authorizes repair parts, special tools, special test, measurement, and diagnostic
equipment (TMDE), and other special support equipment required for performance of aviation unit maintenance
(AVUM) and aviation intermediate maintenance (AVIM) of the High Performance Rescue Hoist Assembly. It authorizes
the requisitioning, issue and disposition of repair parts, spares and special tools as indicated by the source, maintenance
and recoverability (SMR) codes.
C-2. General. In addition to Section I, Introduction, this Repair Parts and Special Tools List is devided into the
following sections:
a. Section II. Repair Parts List. A list of spare and repair parts authorized for use in the performance of maintenance.
The list also indicates parts which must be removed for replacement of the authorized parts. Parts Lists are composed of
fictional groups in numeric sequence with the parts in each group listed in ascending figure and item number sequence.
Bulk materials are listed by item name in FIG. BULK at the end of the section.
b. Section III. Special Tools List.
A list of special tools, special TMDE, and other special support equipment
authorized for the performance of maintenance.
c. Section IV. National Stock Number and Part Number Index. A list in Federal Supply Class (FSC) sequence, of
all National stock numbers (NSN) appearing in the listings, followed by a list in alphanumeric sequence of all part
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 (Sections II and III).
a. ITEM NO. (Column (1)).
The number used to identify item called out in the illustration.
b. SMR CODE (Column (2)). The Source, Maintenance and Recoverability (SMR) code is a 5-position code containing
supply / requisitioning information, maintenance category authorization criteria and disposition instruction.
(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
P A
Item procured and stocked for anticipated or known usage.
P B
Item procured and stocked for insurance purpose because
essentiality dictates that a minimum quantity be available
in the supply system.
C-1
