Item procured and stocked for anticipated
This manual lists spares and repair parts; special tools;
or known usage.
special test, measurement, and diagnostic equipment
(TMDE), and other special support equipment required
equipment, procured for initial issue or
for performance of organizational, direct support, and
general support maintenance of the AN/USM-140A. It
authorizes the requisitioning and issue of spares and
Not subject to automatic replenishment.
repair parts as indicated by the source and maintenance
A support item that is not stocked. When
required, item will be procured through normal supply
Cannibalization or salvage may be used
This Repair Parts and Special Tools List is divided into
as a source of supply for any items
the following sections:
a. Section II. Repair Parts List. A list of spares
source coded above except those coded
XA and aircraft support items as
and repair parts authorized for use in the performance of
restricted by AR 700-42.
maintenance. The list also includes parts which must be
(2) Maintenance code. Maintenance codes
removed for replacement of the authorized parts. Parts
are assigned to indicate the levels of maintenance
lists are composed of functional groups in numeric
authorized to USE and REPAIR support items. The
sequence, with the parts in each group listed in figure
maintenance codes are entered in the third and fourth
and item number sequence.
Special Tools List.
positions of the Uniform SMR Code format as follows:
(a) The maintenance code entered in the third
c. Section IV. National Stock Number and Part
position will indicate the lowest maintenance level
Number Index. A list, in National item identification
authorized to remove, replace, and use the support
item. The maintenance code entered in the third
number (NIIN) sequence, of all National stock numbers
position will indicate one of the following levels of
(NSN) appearing in the listings, followed by a list, in
alphameric sequence, of all part numbers appearing in
the listings. National stock numbers and part numbers
Crew or operator maintenance performed
are cross-referenced to each illustration figure and item
within organizational maintenance.
Support item is removed, replaced, used at
3. Explanation of Columns
the general support level.
(b) The maintenance code entered in the fourth
position indicates whether the item is to be repaired and
This column is divided as
identifies the lowest maintenance level with the
(1) Figure number. Indicates the figure
capability to perform complete repair (i.e., all
authorized maintenance functions). This position will
number of the illustration on which the item is shown.
contain one of the following maintenance codes:
(2) Item number. The number used to
identify item called out in the illustration.
The lowest maintenance level capable of
b. Source, Maintenance, and Recoverability
complete repair of the support item is the general
(1) Source code. Source codes indicate
Nonreparable. No repair is authorized.
the manner of acquiring support items for maintenance,
(3) Recoverability code. Recoverability codes
repair, or overhaul of end items. Source codes are
entered in the first and second positions of the Uniform
SMR Code format as follows: