(2) Maintenance code. Maintenance codes are assigned
to indicate the levels of maintenance authorized to USE and
This manual lists spares and repair parts; special tools; special
REPAIR support items. The maintenance codes are entered
test, measurement, and diagnostic equipment (TMDE), and
in the third and fourth positions of the Uniform SMR Code
other special support equipment required for performance of
format as follows:
direct support and general support maintenance of the
(a) The maintenance code entered in the third position
AN/ARM-109. It authorizes the requisitioning and issue of
will indicate the lowest maintenance level authorized to
spares and repair parts as indicated by the source and
remove, replace, and use the support item.
The maintenance code entered in the third position will
indicate one of the following levels of maintenance:
This Repair Parts and Special Tools List is divided into the
O-Support item is removed, replaced, used at the
a. Section II. Repair Parts List. A list of spares and repair
H-Support item is removed, replaced, used at the general
parts authorized for use in the performance of maintenance.
The list also includes parts which must be removed for
(b) The maintenance code entered in the fourth position
replacement of the authorized parts. Parts lists are composed
indicates whether the item is to be repaired and identifies the
of functional groups in numeric sequence, with the parts in
lowest maintenance level with the capability to perform
each group listed in figure and item number sequence.
complete repair (i.e., all authorized maintenance functions).
b. Section III. Special Tools List. Not applicable.
This position will contain one of the following maintenance
Index. A list, in National item identification number (NIIN)
sequence, of all National stock numbers (NSN) appearing in
H-The lowest maintenance level capable of complete repair of
the listings, followed by a list, in alphameric sequence, of all
the support item is the general support level.
part numbers appearing in the listings.
Z-Nonreparable. No repair is authorized.
numbers and part numbers are cross-referenced to each
(3) Recoverability code.
Recoverability codes are
illustration figure and item number appearance.
assigned to support items to indicate the disposition action on
unserviceable items. The recoverability code is entered in the
3. Explanation of Columns
fifth position of the Uniform SMR Code format as follows:
a. Illustration. This column is divided as follows:
(1) Figure number. Indicates the figure number of the
illustration on which the item is shown.
(2) Item number. The number used to identify item
Z-Nonreparable item. When unserviceable, condemn and
called out in the illustration.
dispose at the level indicated in position 3.
b. Source, Maintenance, and Recoverability (SMR) Codes.
H-Reparable item. When uneconomically reparable, condemn
(1) Source code. Source codes indicate the manner of
and dispose at the general support level.
acquiring support items for maintenance, repair, or overhaul of
c. National Stock Number. Indicates the National stock
end items. Source codes are entered in the first and second
number assigned to the item and will be used for requisitioning
positions of the Uniform SMR Code format as follows:
d. Part Number. Indicates the primary number used by the
PA-Item procured and stocked for anticipated or known usage.
manufacturer (individual, company, firm, corporation, or
XD-A support item that is not stocked. When required, item
Government activity), which controls the design and
will be procured through normal supply channels.
characteristics of the item by means of its engineering
requirements to identify an item or range of items.
Cannibalization or salvage may be used as a
source of supply for any items source coded above
except those coded XA and aircraft support items
When a stock numbered item is requisitioned,
as restricted by AR 700-42.
the repair part received may have a different part
number than the part being replaced.