PD-Support item, excluding support equipment,
This manual lists spares and repair parts; special tools;
procured for initial issue or outfitting and stocked
special test, measurement, and diagnostic equipment
only for subsequent or additional initial issues or
(TMDE), and other special support equipment required
for performance of direct support maintenance of the
XA-Item is not procured or stocked because the
AN/AKT-18B. It authorizes the requisitioning and issue
requirements for the item will result in the
of spares and repair parts as indicated by the source
replacement of the next higher assembly.
and maintenance codes.
XD-A support item that is not stocked. When required,
item will be procured through normal supply
This Repair Parts and Special Tools List is divided into
the following sections:
Cannibalization or salvage may be
and repair parts authorized for use in the performance of
used as a source of supply for any
maintenance. The list also includes parts which must be
items source coded above except
removed for replacement of the authorized parts. Parts
lists are composed of functional groups in numeric
those coded XA and aircraft support
sequence, with the parts in each group listed in figure
items as restricted by AR 700-42.
and item number sequence.
(2) Maintenance code. Maintenance codes
b. Section III. Special Tools List. Not applicable.
are assigned to indicate the levels of maintenance
authorized to USE and REPAIR support items. The
maintenance codes are entered in the third and fourth
Number Index. A list, in National item identification
positions of the Uniform SMR Code format as follows:
number (NIIN) sequence, of all National stock numbers
(a) The maintenance code entered in
(NSN) appearing in the listings, followed by a list, in
the third position will indicate the lowest maintenance
alphameric sequence, of all part numbers appearing in
level authorized to remove, replace, and use the support
the listings. National stock numbers and part numbers
item. The maintenance code entered in the third
are cross-referenced to each illustration figure and item
position will indicate one of the following levels of
3. Explanation of Columns
a. Illustration. This column is divided as follows:
O-Support item is removed, replaced, used at the
(1) Figure number.
Indicates the figure
number of the illustration on which the item is shown.
F-Support item is removed, replaced, used at the direct
(2) Item number.
The number used to
identify item called out in the illustration.
D-Support items that are removed, replaced, used at
b. Source, Maintenance, and Recoverability (SMR)
depot, mobile depot, specialized repair activity only.
(b) The maintenance code entered in
(1) Source code. Source codes indicate the
the fourth position indicates whether the item is to be
manner of acquiring support items for maintenance,
repaired and identifies the lowest maintenance level
repair, or overhaul of end items. Source codes are
with the capability to perform complete repair (i.e., all
entered in the first and second positions of the Uniform
authorized maintenance functions). This position will
SMR Code format as follows:
contain one of the following maintenance codes:
PA-Item procured and stocked for anticipated or known
F-The lowest maintenance level capable of complete
repair of the support item is the direct support level.