This manual lists and authorizes spares and repair parts; special tools; special test, measurement, and diagnostic
equipment (TMDE); and other special support equipment required for performance of organizational, direct support, and
general support maintenance of the ME-525A/USM. It authorizes the requisitioning, issue, and disposition of spares,
repair parts and special tools as indicated by the source, maintenance and recoverability (SMR) codes.
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 by this RPSTL for use in the
performance of maintenance. The list also includes parts which must be removed for replacement of the authorized parts.
Parts lists are composed of functional groups in ascending numeric sequence, with the parts in each group listed in
ascending item number sequence. Figure numbers are listed directly beneath the group header.
b. Section III. Special Tools List. A list of special tools, special TMDE, and other special support equipment
authorized by this RPSTL (as indicated by Basis of Issue (BOI) information in (column (5)) for the performance of
c. Section IV. National Stock Number and Part Number Index. A list, in National item identification number
(NIIN) sequence, of all National stock numbered items appearing in the listing, followed by a list in alphanumeric se-
quence 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.
Explanation of Columns (Section II and III)
a. Item No. (Column (1)). Indicates the number used to identify items called out in the illustration.
b. SMR Code (Column (2)). The source, maintenance, and recoverability (SMR) code is a five-position code
containing supply/requisitioning information, maintenance category authorization criteria, and disposition instruction, as
shown in the following breakout:
Complete repair: Maintenance capacity, capability, and authority to perform all corrective
maintenance tasks of the "Repair" function in a use/user environment in order to restore
serviceability to a failed item.
(1) Source code. The source code tells you how to get an item needed for maintenance, repair, or overhaul of an
end item/equipment. Explanations of source codes follows: