(2) Maintenance code. Maintenance codes are
This manual lists spares and repair parts; special tools,
assigned to indicate the levels of maintenance authorized
Special test, measurement, and diagnostic equipment
to USE and REPAIR support items. The maintenance
(TMDE), and other special equipment required
codes arc entered in the third and fourth positions of the
for performance of Organizational, direct support, and
uniform SMR code format as follows
general support maintenance of the PP-4606C/G. It
(a) The maintenance code entered in the third
authorizes the requisitioning and issue of spares and repair
position will indicate the lowest maintenance level
parts as indicated by the source and maintenance codes.
authorized to 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
repair parts authorized for use in the performance of
H -Support item is removed, replaced, used at the
maintenance. The list also includcs parts which must be
general support level.
removed for replacement of the authorized parts. Parts
D -Support items that arc removed, replaced, used at
lists are composed of functional groups numeric se-
depot, mobile depot, specialized repair activity only.
quence, with the parts in each group listed in figure and
(b) The maintenance code entered in the fourth
item number sequence.
position indicates whether the item is to be repaired and
b. Section III. Special Tools List. Not applicable.
identifies the lowest maintenance level with the capability
to perform complete repair (i.e., all authorized mainte-
ber Index. A list, in National item identification number
nance functions). This position will contain one of the
(NIIN) sequence, of all National stock numbers (NSN)
following maintenance codes.
appearing in the listings, followed by a list, in alphameric
sequence, of all part numbers appearing in the listings.
D --The lowest maintenance level capable of complete
National stock numbers and part numbers arc cross-
repair of the support item is the depot level.
referenced to each illustration figure and item number ap-
Z --Nonreparable. No repair is authorized.
(3) Recoverability code. Recoverability codes arc
3. Explanation of Columns
assigned to support items to indicate the disposition action
a. Illustration. This column is divided as follows:
on unserviceable items. The recoverability code is entered
(1) Figure number. Indicates the figure number of
in the fifth position of the Uniform SMR Code format as
the illustration on which the item is shown.
(2) Item number. The number and to identify item
called out in the illustration.
b. Source, Maintenance, and Recoverability (SMR)
Z --Nonreparable item. When unservicebale, condemn
and dispose at the level indicated in position 3.
(1) Source code. Source codes indicate the manner
D -ReparabIe item. When beyond lower level repair
of acquiring support items for maintenance, repair, or
capability, return to depot. Condemnation and dis-
overhaul of end items. Source codes are entered in the
posal not authorized below depot level.
first and second positions of the Uniform SMR Code for-
c. National Stock Number. Indicates the National stock
mat as follows:
number assigned to the item and will used for requisi-
PA-hem procured and stocked for anticipated or known
d. Part Number. Indicates the primary number used by
the manufacturer (individual, company, firm, corpora-
XD-A support item that is not stocked. When_
tion, or Government activity), which controls the design
item will be procured through normal supply chan-
and characteristics of the item by means of its engineering
drawings, specifications, standards, and inspection re-
quirements to identify an item or range of items.
Cannibalization or salvage may be used as a
source of supply for any items source coded
When a stocked numbered item is requisi-
above except those coded XA and aircraft sup-
tioned, the repair part received may have a
port items as restricted by AR 700-42.