TM
11-5835-212-24P
INTRODUCTION
1. Scope
Definition
Code
This manual lists spares and repair parts; special
PA - Item procured and stocked for anticipated
tools; special test, measurement, and diagnostic
or known usage.
equipment (TMDE), and other special support
XD - A support item that is not stocked. When
equipment required for performance of organiza-
required, item will be procured through
tional, direct support, and general support main-
normal supply channels.
tenance of the RD-173/UN and RD-173A/UN.
NOTE
It authorizes the requisitioning and issue of spares
and repair parts as indicated by the source and
Cannibalization or salvage may be used
maintenance codes.
as a source of supply for any items source
coded above except those coded XA and
2. General
aircraft support items as restricted by
This Repair Parts and Special Tools List is divided
AR 700-42.
into the following sections:
(2) Maintenance code. Maintenance codes are
assigned to indicate the levels of maintenance
and repair parts authorized for use in the per-
authorized to USE and REPAIR support items.
formance of maintenance. The list also includes
The maintenance codes are entered in the third
parts which must be removed for replacement of
and fourth positions of the Uniform SMR Code
the authorized parts. Parts lists are composed of
format as follows:
functional groups in numeric sequence, with the
(a) The maintenance code entered in the
parts in each group listed in figure and item num-
third position will indicate the lowest maintenance
ber sequence.
level authorized to remove, replace, and use the
b. Section III. Special Tools List. Not applica-
support item. The maintenance code entered in the
ble.
third position will indicate one of the following
c. Section IV. National Stock Number and Part
levels of maintenance:
Number Index. A list, in National item identifica-
Application/Explanation
Code
tion number (NIIN) sequence, of all National
O - Support item is removed, replaced, used at the
stock numbers (NSN) appearing in the listings,
organizational level.
followed by a list, in alphameric sequence, of all
F - Suppurt item is removed, replaced, used at the
part numbers appearing in the listings. National
direct support level.
stock numbers and part numbers are cross-refer-
(b) The maintenance code entered in the
enced to each illustration figure and item number
fourth position indicates whether the item is to
appearance.
be repaired and identifies the lowest maintenance
level with the capability to perform complete
3. Explanation of Columns
repair ( i.e., all authorized maintenance functions).
a. lllustration. This column is divided as fol-
This position will contain one of the following
lows :
maintenance codes:
(1) Figure number. Indicates the figure num-
Application/Explanation
Code
ber of the illustration on which the item is shown.
O - The lowest maintenance level capable of com-
(2) Item number. The number used to iden-
plete repair of the support item is the orga-
tify item called out in the illustration.
nizational level.
b. Source, Maintenance, and Recoverability
F - The lowest maintenance level capable of com-
(SMR) Codes.
plete repair of the support item is the direct
(1) Source code. Source codes indicate the
support level.
manner of acquiring support items for mainte-
D - The lowest maintenance level capable of com-
nance, repair, or overhaul of end items. Source
plete repair of the support item is the depot
codes are entered in the first and second positions
level.
of the Uniform SMR Code format as follows:
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