TM 11-6625-599-20P-2
SECTION I
INTRODUCTION
1. Scope
NOTE
Cannibalization or salvage may be used as a
This manual lists spares and repair parts; special tools;
source of supply for any items source coded
special test, measurement, and diagnostic equipment
above except those coded XA and aircraft sup-
(TMDE), and other special support equipment required
port items as restricted by AR 700-42.
for performance of organizational maintenance of the
(2) Maintenance code. Maintenance codes are
AN/USM-98B. It authorizes the requisitioning and
assigned to indicate the levels of maintenance author-
issue of spares and repair parts as indicated by the
ized to USE and REPAIR support items. The mainte-
source and maintenance codes.
nance codes are entered in the third and fourth positions
2. General
of the Uniform SMR Code format as follows:
(a) The maintenance code entered in the third
This Repair Parts and Special Tools List is divided into
position will indicate the lowest maintenance level
the following sections:
authorized to remove, replace, and use the support
a. Section II. Repair Parts List. A list of spares
item. The maintenance code entered in the third posi-
and repair parts authorized for use in the performance
tion will indicate one of the following levels of
of maintenance. The list also includes parts which
maintenance:
must be removed for replacement of the authorized
parts. Parts lists are composed of functional groups in
Code
Application/Explanation
numeric sequence, with the parts in each group listed in
O--Support item is removed, replaced, used at the
figure and item number sequence.
organizational level.
b. Section III. Special Tools List. Not applicable.
(b) The maintenance code entered in the fourth
c. Section IV. National Stock Number and Part
position indicates whether the item is to be repaired and
Number Index. A list, in National item identification
identifies the lowest maintenance level with the capabili-
number (NIIN) sequence, of all National stock numbers
ty to perform complete repair (i.e., all authorized
(NSN) appearing in the listings, followed by a list, in
maintenance functions). This position will contain one
alphameric sequence, of all part numbers appearing in
of the following maintenance codes:
the listings. National stock numbers and part numbers
are cross-referenced to each illustration figure and item
Code
Application/Exp&nation
number appearance.
Z--Nonreparable. No repair is authorized.
3. Explanation of Columns
(3) Recoverability code. Recoverability codes
are assigned to support items to indicate the disposition
a. Illustration. This column is divided as follows:
action on unserviceable items. The recoverability code
(1) Figure number. Indicates the figure number
is entered in the fifth position of the Uniform SMR
of the illustration on which the item is shown.
Code format as follows:
(2) Item number. The number used to identify
item called out in the illustration.
Recoverability
b. Source, Maintenance, and Recoverability (SMR)
codes
Definition
Codes.
Z--Nonreparable item. When unserviceable, con-
(1) Source code. Source codes indicate the man-
demn and dispose at the level indicated in position 3.
ner of acquiring support items for maintenance, repair,
c. National Stock Number. Indicates the National
or overhaul of end items. Source codes are entered in
stock number assigned to the item and will be used for
the first and second positions of the Uniform SMR
requisitioning purposes.
Code format as follows:
d. Part Number. Indicates the primary number
used by the manufacturer (individual, company, firm,
Code
Definition
PA--Item procured and stocked for anticipated or
corporation, or Government activity), which controls
known usage.
the design and characteristics of the item by means of its
XD--A support item that is not stocked. When re-
engineering drawings, specifications, standards, and in-
quired, item will be procured through normal supply
spection requirements to identify an item or range of
items.
channels.
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