those published in TM 11-5820-520-34P-1. Only those
inspection requirements to identify an item or range of
parts assigned the third position SMR maintenance
code ``C" or "O" are listed in the tabular listing;
therefore, there may be a break in the item number se-
When a stock numbered item is requisitioned,
quence. Only illustrations containing organizational
the repair part received may have a different
authorized items appear in this manual.
part number than the part being replaced.
5. How to Locate Repair Parts
e. Federal Supply Code for Manufacturer (FSCM).
The FSCM is a 5-digit numeric code listed in SB 708-42
a. When National stock number or part number is
which is used to identify the manufacturer, distributor,
or Government agency, etc.
(1) First. Using the table of contents, determine
f. Description. Indicates the Federal item name and,
the functional group within which the item belongs.
if required, a minimum description to identify the item.
This is necessary since illustrations are prepared for
g. Unit of Measure (U/M). Indicates the standard of
functional groups and listings are divided into the
the basic quantity of the listed item as used in perform-
ing the actual maintenance function. This measure is
(2) Second. Find the illustration covering the
expressed by a two-character alphabetical abbrevia-
functional group to which the item belongs.
tion (e.g., ea, in, pr, etc). When the unit of measure
(3) Third. Identify the item on the illustration and
differs from the unit of issue, the lowest unit of issue
note the illustration figure and item number of the
that will satisfy the required units of measure will be
(4) Fourth. Using the Repair Parts Listing, find
h. Quantity Incorporated in Unit. Indicates the
the figure and item number noted on the illustration.
quantity of the item used in the breakout shown on the
b. When National stock number or part number is
illustration figure, which is prepared for a functional
group, subfunctional group, or an assembly.
(1) First. Using the Index of National Stock Num-
bers and Part Numbers, find the pertinent National
4. Special Information
stock number or part number. This index is in NIIN se-
a. The following publications pertain to the
quence followed by a list of part numbers in
AN/GRC-106 and its components:
alphameric sequence, cross-referenced to the illustra-
TM 11-5820-467-15, Antenna Group AN/GRA-50
tion figure number and item number.
TM 11-5820-467-24P, Antenna Group AN/GRA-50
(2) Second. After finding the figure and item
TM 11-5820-520-12, Radio Sets AN/GRC-106 and
number, locate the figure and item number in the
repair parts list.
TM 11-5965-222-14P, Dynamic Loudspeaker
b. The illustrations in this manual are identical to
(Next printed page is 4.1)