(1) Source code. Source codes are assigned to
support items to indicate the manner of acquiring
This manual lists repair parts, special tools, test,
support items for maintenance, repair, or overhaul of
measurement, and diagnostic equipment (TMDE),
end items. Source codes are entered in the first and
and other support equipment required for operation
second positions of the Uniform SMR Code format as
and performance of direct support, and general sup-
port maintenance of the azimuth gyro survey instru-
Item procured and stocked for anticipated or known
Item procured and stocked for insurance purposes
Section II - Repair Parts List. A list of repair
because essentiality dictates that a minimum
parts authorized for use in the performance of
quantity be available in the supply systems.
maintenance, The list also includes parts which must
Item procured and stocked and which otherwise
be removed for replacement of the authorized parts.
would be coded PA except that it is deteriorative
Parts lists are composed of functional groups in
Support item, excluding support equipment, pro-
ascending numerical sequence, with the parts in each
cured for initial issue or outfitting and stocked only
group listed in figure and item number sequence.
for subsequent or additional initial issues or out-
Bulk materials are listed in NSN sequence, as the last
fitting. Not subject to automatic replenishment.
group in Section II.
Support equipment procured and stocked for initial
issue or outfitting to specified maintenance repair
b. Section III Special Tools List. A list of special
tools, TMDE, and support equipment authorized for
Support equipment which will not be stocked but
the performance of maintenance at the direct, and
which will be centrally procured on demand.
general support levels.
Item procured and stocked to provide for sustained
c. Section IV National Stock Number and Part
support for the life of the equipment. It is applied
to an item peculiar to the equipment which, be-
Number Index. A list, in ascending numerical se-
cause of probable discontinuance or shutdown of
quence, of all National stock numbers appearing in
production facilities, would prove uneconomical
the listings, followed by a list, in alphanumeric se-
to reproduce at a later time.
quence, of all part numbers appearing in the listings.
An item of a depot overhaul/repair kit and not pur-
National stock numbers and part numbers are cross-
chased separately. Depot kit defined as a kit that
-referenced to each illustration figure and item
provides item required at the time of overhaul or
An item of a maintenance kit and not purchased
separately. Maintenance kit defined as a kit that
3. Explanation of Columns.
provides an item that can be replaced at organi-
zational or intermedieate levels of maintenance.
The following provides an explanation of columns
Item included in both a depot overhaul/repair kit
found in the tabular listings:
and a maintenance kit.
a. Illustration. This column is divided as follows:
Item to be manufactured or fabricated at organiz-
(1) Figure number. Indicates the figure number
Item to be manufactured or fabricated at the direct
of the illustration in which the item is shown.
support maintenance level.
(2) Item number. The number used to identify
Item to be manufactured or fabricated at the general
each item called out in the illustration.
support maintenance level.
b. Source, Maintenance, and Recoverability Codes
Item to be manufactured or fabricated at the depot