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TM-11-5820-497-20P Receiver-Transmitter Radio RT-505/PRC-25 (NSN
Special Information - TM-11-5820-497-20P0006
TM 11-5820-497-20P
1. Scope
assigned to indicate the levels of maintenance authorized
This manual lists spares and repair parts; special tools;
to USE and REPAIR support items. The maintenance
special test, measurement, and diagnostic equipment
codes are entered in the third and fourth positions of the
(TMDE), and other special support equipment required
Uniform SMR Code format as follows:
for performance of organizational maintenance of the
(a) The maintenance code entered in the third
RT-505/PRC-25. It authorizes the requisitioning and
position will indicate the lowest maintenance level
issue of spares and repair parts as indicated by the source
authorized to remove, replace, and use the support item.
and maintenance codes.
The maintenance code entered in the third position will
indicate one of the following levels of maintenance:
2. General
This Repair Parts and Special Tools List is divided into the
O-Support item is removed, replaced, used at the
following sections:
organizational level.
a. Section II. Repair Parts List. A list of spares and
(b) The maintenance code entered in the fourth
repair parts authorized for use in the performance of
position indicates whether the item is to be repaired and
maintenance. The list also includes parts which must be
identifies the lowest maintenance level with the capability
removed for replacement of the authorized parts. Parts
to perform complete repair (i.e., all authorized mainte-
lists are composed of functional groups in numeric se-
nance functions). This position will contain one of the
quence, with the parts in each group listed in figure and
following maintenance codes:
item number sequence.
b. Section III. Special Tools List. Not applicable.
D-The lowest maintenance level capable of complete
c. Section IV. National Stock Number and Part Num-
repair of the support item is the depot level.
ber. A list, in National item identification number (NIIN)
Z-Nonreparable. No repair is authorized.
sequence, of all National stock numbers (NSN) appearing
(3) Recoverability code. Recoverability codes are
in the listings, followed by a list, in alphameric sequence,
assigned to support items to indicate the disposition action
of all part numbers appearing in the listings. National
on unserviceable items. The recoverability code is entered
stock numbers and part numbers are cross-referenced to
in the fifth position of the Uniform SMR Code format as
each illustration figure and item number appearance.
3. Explanation of Columns
a. Illustration. This column is divided as follows:
Z-Nonreparable item. When unserviceable, condemn
(1) Figure number. Indicates the figure number of
and dispose at the level indicated in position 3.
the illustration on which the item is shown.
D-Reparable item. When beyond lower level repair
(2) Item number. The number used to identify item
capability, return to depot. Condemnation and
called out in the illustration.
disposal not authorized below depot level.
b. Source, Maintenance, and Recoverability (SMR)
c. National Stock Number. Indicates the National stock
number assigned to the item and will be used for requisi-
(1) Source code. Source codes indicate the manner
tioning purposes.
of acquiring support items for maintenance, repair, or
d. Part Number. Indicates the primary number used by
overhaul of end items. Source codes are entered in the
the manufacturer (individual, company, firm, corpora-
first and second positions of the Uniform SMR Code for-
tion, or Government activity), which controls the design
mat as follows:
and characteristics of the item by means of its engineering
drawings, specifications, standards, and inspection re-
PA-Item procured and stocked for anticipated or
quirements to identify an item or range of items.
known usage.
XD-A support item that is not stocked. When re-
When a stock numbered item is requisitioned,
quired, item will be procured through normal
the repair part received may have a different part
supply channels.
number than the part being replaced.
e. Federal Supply Code for Manufacturer (FSCM).
Cannibalization or salvage may be used as a
The FSCM is a 5-digit numeric code listed in SB 708-42
source of supply for any items source coded
which is used to identify the manufacturer, distributor, or
above except those coded XA and aircraft sup-
Government agency, etc.
port items as restricted by AR 700-42.
f. Description. Indicates the Federal item name and, if
(2) Maintenance code. Maintenance codes are

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