This manual lists spares and repair parts; special tools;
Cannibalization or salvage may be used as a
source of supply for any items source coded
equipment(TMDE), and other special support equipment
above except those coded XA and aircraft
required for performance of organizational maintenance
support items as restricted by AR 700-42.
of the EN-91B. It authorizes the requisitioning and issue
(2) Maintenance code. Maintenance codes are
of spares and repair parts as indicated by the source and
assigned to indicate the levels of maintenance
authorized to USE and REPAIR support items. The
maintenance codes are entered in the third and fourth
This Repair Parts and Special Tools List is divided into
positions of the Uniform SMR Code format as follows:
the 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
The maintenance code entered in the third position will
removed for replacement of the authorized parts. Parts
indicate one of the following levels of maintenance:
lists are composed of functional groups in numeric
sequence, with the parts in each group listed in figure
and item number sequence.
b. Section III. Special Tools List. Not applicable.
O-Support item is removed, replaced, used at the
Number Index. A list, in National item identification
(b) The maintenance code entered in the fourth
number (NIIN) sequence, of all National stock numbers
position indicates whether the item is to be repaired and
(NSN) appearing in the listings, followed by a list, in
identifies the lowest maintenance level with the capability
alphameric sequence, of all part numbers appearing in
to perform complete repair (i.e., all authorized
the listings. National stock numbers and part numbers
maintenance functions). This position will contain one of
are cross-referenced to each illustration figure and item
the following maintenance codes:
3. Explanation of Columns
a. Illustration. This column is divided as follows:
O-The lowest maintenance level capable of complete
(1) Figure number. Indicates the figure number of
repair of the support item is the organizational level.
the illustration on which the item is shown.
F-The lowest maintenance level capable of complete
(2)item number. The number used to identify item
repair of the support item is the direct support level.
called out in the illustration.
Z-Nonreparable. No repair is authorized.
b. Source, Maintenance, and Recoverability (SMR)
(3) Recoverability code. Recoverability codes are
assigned to support items to indicate the disposition
(1) Source code.
Source codes indicate the
action on unserviceable items. The recoverability code is
manner of acquiring support items for maintenance,
entered in the fifth position of the Uniform SMR Code
repair, or overhaul of end items. Source codes are
format as follows:
entered in the first and second positions of the Uniform
SMR Code format as follows:
Z-Nonreparable item. When unserviceable, condemn
PA-Item procured and stocked for anticipated or known
and dispose at the level indicated in position 3.
XD-A support item that is not stocked. When required,
item will be procured through normal supply channels.