TM 11-4940-238-24P
INTRODUCTION
1. Scope
(1) Source code. Source codes indicate the
manner of acquiring support items for maintenance,
repair, or overhaul of end items. Source codes are
This manual lists spares and repair parts special
entered in the first and second positions of the
tools; special test, measurement, and diagnostic
equipment (TMDE), and other special support equip
Uniform SMR Code format as follows:
ment required for performance of organizational,
Code
Definition
direct support and general support maintenance of
PA - Item procured and stocked for anticipated or
t h e AN/ASM-146A and AN/ASM-147A. It
known usage.
authorises the requisitioning and issue of spares and
PD - Support item, excluding support equipment,
r e p a i r parts as indicated by the source and
procured for initial issue or outfitting and
maintenance codes.
stocked only for subsequent or additional in-
2. General
itial issues or outfittings. Not subject to
automatic replenishment.
XA - Item is not procured or stocked because the re-
This Repair Parts and Special Tools List is divided
quirements for the item will result in there-
into the following sections
placement of the next higher assembly.
XD - A support item that is not stocked. When re-
repair parts authorized for use in the performance of
quired, item will be procured through nor-
maintenance. The list also includes parts which must
mal channels.
be removed for replacement of the authorized parts.
Parts lists are composed of functional groups in
NOTE
numeric sequence, with the parts in each group listed
Cannibalization or salvage maybe used as
in figure and item number sequence.
a source of supply for any items source
coded above except those coded XA and air-
craft support items as restricted by AR
b. Section III. Special Tools List. Not applicable.
700-42.
c. Section IV. National Stock Number and Part
(2) Maintenance code. Maintenance codes are
Number Index. A list, in National item identification
assigned to indicate the levels of maintenance
number (NIIN) sequence, of all National stock
authorized to USE and REPAIR support items. The
numbers (NSN) appearing in the listings, followed by
maintenance codes are entered in the third and fourth
a list, in alphameric sequence, of all part numbers
positions of the Uniform SMR Code format as
appearing in the listings. National stock numbers and
follows:
part numbers are cross-referenced to each illustra-
(a) The maintenance code entered in the third
tion figure and item number appearance.
position will indicate the lowest maintenance level
3. Explanation of Columns
authorized to remove, replace, and use the support
item. The maintenance code entered in the third posi-
tion will indicate one of the following levels of
a. Illustration. This column is divided as follows:
maintenance:
(1) Figure number. Indicates the figure number
of the illustration on which the item is shown.
Application/Expl anation
Code
(2) Item number. The number used to identify
O
- Support item is removed, replaced, used at the
item called out in the illustration.
organizational level.
b. Source, Maintenance, and Recovera bility (SMR)
F
- Support item is removed, replaced, used at the
Codes.
direct support level.
