Cannibalization or salvage may be used
This manual lists spares and repair parts; special tools; -
as a source of supply for any items
special test, measurement, and diagnostic equipment
source coded above except those coded
TMDE), and other special support equipment required for
XA and aircraft support items as
performance of general support maintenance of the
restricted by AR 700-42.
AN/PRM-31, AN/PRM-31A and AN/PRM-31B.
authorizes the requisitioning and issue of spares and
(2) Maintenance code. Maintenance codes
repair parts as indicated by the source and maintenance
are 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. Section II. Repair Parts List. A list of spares
(a) The maintenance code entered in
and repair parts authorized for use in the performance of
the third position will indicate the lowest maintenance
maintenance. The list also includes parts which must be
level authorized to remove, replace, and use the support
removed for replacement of the authorized parts. Parts
item. The maintenance code entered in the third position
lists are composed of functional groups in numeric
will indicate one of the following levels of maintenance:
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
c. Section IV. National Stock Number and Part
Number Index. A list, in National item identification
number (NIIN) sequence, of all National stock numbers
H -Support item is removed, replaced, used at the
(NSN) appearing in the listings, followed by a list, in
general support level.
alphameric sequence, of all part numbers appearing in
(b) The maintenance code entered in
the listings. National stock numbers and part numbers
are cross-referenced to each illustration figure and item
the fourth position indicates whether the item is to be
repaired and identifies the lowest maintenance level with
the capability to perform complete repair (.e., all
3. Explanation of Columns
authorized maintenance functions). This position will
a. Illustration. This column is divided as follows:
contain one of the following maintenance codes:
(1) Figure number.
Indicates the figure
number of the illustration on which the item is shown.
H -The lowest maintenance level capable of complete
(2) Item number. The number used to identify
repair of the support item is the general support level.
item called out in the illustration.
D -The lowest maintenance level capable of complete
b. Source, Maintenance, and Recoverability (SMR)
repair of the support item is the depot level.
Z -Nonreparable. No repair is authorized.
(1) Source code. Source codes indicate the manner of
(3) Recoverability code. Recoverability codes
acquiring support items for maintenance, repair, or
overhaul of end items. Source codes are entered in the
are assigned to support items to indicate the disposition
first and second positions of the Uniform SMR Code
action on unserviceable items. The recoverability code is
format as follows:
entered in the fifth position of the Uniform SMR Code
format as follows:
PA - Item procured and stocked for anticipated or known
Z -Nonreparable item. When unserviceable, condemn
and dispose at the level indicated in position 3.
PD - Support item, excluding support equipment,
procured for initial issue or outfitting and stocked only for
H -Reparable item. When uneconomically reparable,
subsequent or additional initial issues or outfittings. Not
condemn and dispose at the general support level.
subject to automatic replenishment.
D -Reparable item. When beyond lower level repair
XD - A support item that is not stocked. When required,
capability, return to depot. Condemnation and disposal
item will be procured through normal supply channels.
not authorized below depot level.
A -Item requires special handling or condemnation
procedures because of specific reasons (i.e., precious