TM 11-4940-246-24P-1
INTRODUCTION
1. Scope
XD - A support item that is not stocked. When re-
quired, item will be procured through normal
This manual lists spares and repair parts; special tools;
supply channels.
special test, measurement, and diagnostic equipment
NOTE
(TMDE), and other special support equipment required
for performance of organizational, direct support, and
Cannibalization or salvage may be used as a
general support maintenance of the AN/ASM-189A. It
source of supply for any items source coded
authorizes the requisitioning and issue of spares and
above except those coded XA and aircraft
repair parts as indicated by the source and maintenance
support items as restricted by AR 700-42.
codes.
(2) Maintenance code. Maintenance codes are as-
signed to indicate the levels of maintenance authorized to
USE and REPAIR support items. The maintenance codes
2. General
are entered in the third and fourth positions of the
This Repair Parts and Special Tools List is divided into the
Uniform SMR Code format as follows:
following sections:
(a) The maintenance code entered in the third
position will indicate the lowest maintenance level
repair parts authorized for use in the performance of
authorized to remove, replace, and use the support item.
maintenance. The list also includes parts which must be
removed for replacement of the authorized parts. Parts
indicate one of the following levels of maintenance:
lists are composed of functional groups in numeric
Code
Application/Explanation
sequence, with the parts in each group listed in figure and
O - Support item is removed, replaced, used at the
item number sequence.
organizational level.
b. Section III. Special Tools List. Not applicable.
H - Support item is removed, replaced, used at the
general support level.
ber Index. A list, in National item identification
number (NIIN) sequence, of all National stock numbers
position indicates whether the item is to be repaired
(NSN) appearing in the listings, followed by a list, in
and identifies the lowest maintenance level with the
alphameric sequence, of all part numbers appearing in
capability to perform complete repair (i.e., all author-
the listings. National stock numbers and part numbers are
ized maintenance functions). This position will contain
cross-referenced to each illustration figure and item
one of the following maintenance codes:
number appearance.
Application/Explanation
Code
3. Explanation of Columns
H - The lowest maintenance level capable of com-
plete repair of the support item is the general
a. Illustration. This column is divided as follows:
support level.
(1) Figure number. Indicates the figure number of
Z - Nonreparable. No repair is authorized.
the illustration on which the item is shown.
(3) Recoverability code. Recoverability codes are
(2) Item number. The number used to identify item
assigned to support items to indicate the disposition
called out in the illustration.
action on unserviceable items. The recoverability code is
b. Source, Maintenance, and Recoverability (SMR)
entered in the fifth position of the Uniform SMR Code
Codes.
format as follows:
(1) Source code. Source codes indicate the manner of
Recoverability
acquiring support items for maintenance, repair, or
Definition
Codes
overhaul of end items. Source codes are entered in the
first and second positions of the Uniform SMR Code
Z - Nonreparable item. When unserviceable, con-
format as follows:
demn and dispose at the level indicated in
position 3.
Code
Definition
H - Reparable item. When uneconomically repara-
PA - Item procured and stocked for anticipated or
ble, condemn and dispose at the general sup-
known usage.
port level.