This manual lists spares and repair parts; special tools;
special test, measurement, and diagnostic equipment
(1) Source code. Source codes indicate the
(TMDE), and other special support equipment required
manner of acquiring support items for maintenance,
for performance of organizational, direct support, and
repair, or overhaul of end items. Source codes are
general support maintenance of the TS-118A/AP. It
entered in the first and second positions of the Uniform
authorizes the requisitioning and issue of spares and
SMR Code format as follows:
repair parts as indicated by the source and maintenance
PA -- Item procured and stocked for anticipated or
This Repair Parts and Special Tools List is divided into
the following sections:
XD -- A support item that is not stocked. When
required, item will be procured through normal
a. Section II. Repair Parts List. A list of spares
and repair parts authorized for use in the performance of
maintenance. The list also includes parts which must be
removed for replacement of the authorized parts. Parts
Cannibalization or salvage may be
lists are composed of functional groups in numeric
used as a source of supply for any
sequence, with the parts in each group listed in figure
items source coded above except
and item number sequence.
those coded XA and aircraft support
items as restricted by AR 700-42.
Section III. Special Tools List. Not applicable.
(2) Maintenance code. Maintenance codes
c. Section IV. National Stock Number and Part
are assigned to indicate the levels of maintenance
Number Index. A list, in National item identification
authorized to USE and REPAIR support items. The
number (NIIN) sequence, of all National stock numbers
maintenance codes are entered in the third and fourth
(NSN) appearing in the listings, followed by a list, in
positions of the Uniform SMR Code format as follows:
alphameric sequence, of all part numbers appearing in
the listings. National stock numbers and part numbers
(a) The maintenance code entered in the
are cross-referenced to each illustration figure and item
third position will indicate the lowest maintenance level
authorized to remove, replace, and use the support item.
The maintenance code entered in the third position will
Explanation of Columns
indicate one of the following levels of maintenance:
a. Illustration. This column is divided as follows:
(1) Figure number.
Indicates the figure
number of the illustration on which the item is shown.
O--Support item is removed, replaced, used at the
(2) Item number.
The number used to
identify item called out in the illustration.
H--Support item is removed, replaced, used at the
general support level.
(b) The maintenance code entered in the
fourth position indicates whether the item is to be
replaced and identifies the lowest maintenance level with
the capability to perform complete repair