(1) Source code. Source codes indicate the
m a n n e r of acquiring support items for mainte-
This manual lists spares and repair parts; special
n a n c e , repair, or overhaul of end items. Source
t o o l s ; special test, measurement, and diagnostic
codes are entered in the first and second positions
equipment (TMDE), and other special support
of the Uniform SMR Code format as follows:
equipment required for performance of organiza-
t i o n a l maintenance of AN/USM98A. It author-
i z e s the requisitioning and issue of spares and
P A -- I t e m procured and stocked for anticipated
repair parts as indicated by the source and mainte-
or known usage.
Cannibalization or salvage may be used
This Repair Parts and Special Tools List is divided
as a source of supply for any items source
into the following sections:
coded above except those coded XA and
a. Section II. Repair Parts List. A list of spares
a i r c r a f t support items as restricted by
a n d repair parts authorized for use in the per-
f o r m a n c e of maintenance. The list also includes
(2) Maintenance code. Maintenance codes are
parts which must be removed for replacement of
a s s i g n e d to indicate the levels of maintenance
the authorized parts. Parts lists are composed of
a u t h o r i z e d to USE and REPAIR support items.
functional groups in numeric sequence, with the
T h e maintenance codes are entered in the third
parts in each group listed in figure and item num-
a n d fourth positions of the Uniform SMR Code
format as follows:
b. Section III. Special Tools List. Not applicable.
(a) The maintenance code entered in the
c. Section IV. National Stock Number and Part
third position will indicate the lowest maintenance
Number Index. A list, in National item identifica-
level authorized to remove, replace, and use the
tion number (NIIN) sequence, of all National
support item. The maintenance code entered in the
s t o c k numbers (NSN) appearing in the listings,
third position will indicate one of the following
followed by a list, in alphameric sequence, of all
levels of maintenance:
p a r t numbers appearing in the listings. National
stock numbers and part numbers are cross-refer-
enced to each illustration figure and item number
O--Support item is removed, replaced, used at the
(b) The maintenance code entered in the
3. Explanation of Columns
f o u r t h position indicates whether the item is to
a. Illustration. This column is divided as fol-
be repaired and identifies the lowest maintenance
l e v e l with the capability to perform complete
(1) Figure number. Indicates the figure num-
repair (i.e., all authorized maintenance functions).
ber of the illustration on which the item is shown.
T h i s position will contain one of the following
(2) Item number. The number used to iden-
m a i n t e n a n c e codes:
tify item called out in the illustration.
b. Source, Maintenance, and Recoverability
Z--Nonreparable. No repair is authorized.
( S M R ) Codes.