PA--Item procured and stocked for anticipated or
This manual lists spares and repair parts; special
tools; special test, measurement, and diagnostic
PD--Support item, excluding support equipment,
equipment (TDME), and other special support
procured for initial issue or outfitting and
equipment required for performance of direct
stocked only for subsequent or additional initial
support and general support maintenance of the
issues or outfittings. Not subject to automatic
A N / G R C - 1 4 2 (*) and AN/GRC-122 (*). It
authorizes the requisitioning and issue of spares
MD--Item to be manufactured or fabricated at the
and repair parts as indicated by the source and
depot maintenance level.
AD--Item to be assembled at depot maintenance
XA--Item is not procured or stocked because the
This Repair Parts and Special Tools List is divided
requirements for the item will result in the
into the following sections:
replacement of the next higher assembly.
a. Section II. Repair Parts List. A list of spares
XC--Installation drawing, diagram, instruction sheet
and repair parts authorized for use in the per-
field service drawing, that is identified by manu-
formance of maintenance. The list also includes
facturer's part number.
parts which must be removed for replacement of
XD--A support item that is not stocked. When
the authorized parts. Parts lists are composed of
required, item will be procured through normal
functional groups in numeric sequence, with the
parts in each group listed in figure and item
b. Section III. Special Tools List. Not ap-
Cannibalization or salvage may be used as a
source of supply for any items source coded
c. Section IV. National Stock Number and Part
above except those coded XA and aircraft
N u m b e r Index. A list, in National item i d e n -
support items as restricted by AR 700-42.
tification number (NIIN) sequence, of all National
stock numbers (NSN) appearing in the listings,
(2) Maintenance code. Maintenance codes are
followed by a list, in alphameric sequence, of all
assigned to indicate the levels of maintenance
part numbers appearing in the listings. National
authorized to USE and REPAIR support items.
s t o c k numbers and part numbers are cross-
The maintenance codes are entered in the third and
referenced to each illustration figure and item
fourth positions of the Uniform SMR Code format
3. Explanation of Columns
(a) The maintenance code entered in the
a. Illustration. This column is divided as
third position will indicate the lowest maintenance
level authorized to remove, replace, and use the
(1) Figure number. Indicates the figure number
support item. The maintenance code entered in the
of the illustration on which the item is shown.
third position will indicate one of the following
(2) Item number. The number used to identify
levels of maintenance:
item called out in the illustration.
b. Source, Maintenance, and Recoverability (SMR)
O--Support item is removed, replaced, used at the
(1) Source code. Source codes indicate the
manner of acquiring support items for main-
F--Support item is removed, replaced, used at the
tenance, repair, or overhaul of end items. Source
direct support level.
codes are entered in the first and second positions
H--Support item is removed, replaced, used at the
of the Uniform SMR Code format as follows:
general support level.