quirements for the item will result in the replace-
This manual lists spares and repair parts; special tools;
ment of the next higher assembly.
special test, measurement, and diagnostic equipment
XB-Item is not procured or stocked. If not available
(TMDE), and other special support equipment required
through salvage, requisition.
for performance of direct support and general support
XD-A support item that is not stocked. When required,
maintenance of the RT-524/VRC and RT-524A/VRC. It
item will be procured through normal supply
authorizes the requisitioning and issue of spares and repair
parts as indicated by the source and maintenance codes.
Cannibalization or salvage may be used as a
This Repair Parts and Special Tools List is divided into the
source of supply for any items source coded
above except those coded XA and airmail sup-
a. Section II. Repair Parts List. A list of spares and re-
port items as restricted by AR 700-42.
pair parts authorized for use in the performance of main-
(2) Maintenance code. Maintenance codes are
tenance. The list also includes parts which must be re-
assigned to indicate the levels of maintenance authorized
moved for replacement of the authorized parts. Parts lists
to USE and REPAIR support items. The maintenance
are composed of functional groups in numeric sequence,
codes are entered in the third and fourth positions of the
with the parts in each group listed in figure and item num-
Uniform SMR Code format as follows:
(a) The maintenance code entered in the third
b. Section III. Special Tools List. Not applicable.
position will indicate the lowest maintenance level
c. Section IV. National Stock Number and Part Num-
authorized to remove, replace, and use the support item.
ber Index. A list, in National item identification number
The maintenance code entered in the third position will
(NIIN) sequence, of all National stock numbers (NSN)
indicate one of the following levels of maintenance:
appearing in the listings, followed by a list, in alphameric
sequence, of all part numbers appearing in the listings.
O -Support item is removed, replaced, used at the
National stock numbers and part numbers are cross-refer-
enced to each illustration figure and item number ap-
F -Support item is removed, replaced, used at the
direct support level.
H Support item is removed, replaced, used at the
3. Explanation of Columns
general support level.
a. Illustration. This column is divided as follows:
D -Support items that are removed, replaced, used at
(1) Figure number. Indicates the figure number of
depot, mobile depot, specialized repair activity
the illustration on which the item is shown.
(2) Item number. The number used to identify item
(b) The maintenance code entered in the fourth
position indicates whether the item is to be repaired and
called out in the illustration.
identifies the lowest maintenance level with the capability
b. Source, Maintenance, and Recoverability (SMR)
to perform complete repair (i.e., all authorized mainte-
nance functions), This position will contain one of the
(1) Source code. Source codes indicate the manner
following maintenance codes:
of acquiring support items for maintenance, repair, or
overhaul of end items. Source codes are entered in the
first and second positions of the Uniform SMR Code for-
F --The lowest maintenance level capable of complete
mat as follows:
repair of the support item is the direct support
H --The lowest maintenance level capable of complete
PA --Item procured and stocked for anticipated or known
repair of the support item is the generaI support
PD-Support item, excluding support equipment, pro-
D --The lowest maintenance level capable of complete
cured for initial issue or outfitting and stocked
repair of the support item is the depot level.
only for subsequent or additional initial issues or
Z --Nonreparable. No repair is authorized.
outfittings. Not subject to automatic replenish-
(3) Recoverability code. Recoverability codes are
assigned to support items to indicate the disposition action
PF -Support equipment which will not be stocked but
on unserviceable items. The recoverability code is entered
which will be centrally procured on demand.
in the fifth position of the Uniform SMR Code format as
AD-Item to be assembled at depot maintenance level.
XA--Item is not procured or stocked because the re-