followed by the applicable Federal Supply Code for Manufacturer (FSCM) in parentheses. The FSCM is used as an
element in item identification to designate manufacturer or distributor or Government agency, etc.. and is identified in
SB 708-42.
d. Unit of Measure (U/M). Indicates the standard or basic quantity by which the listed item is used in performing the
actual maintenance function. This measure is expressed by a two-character alphabetical abbreviation, e.g., ea, in, pr.
etc., and is the basis used to indicate quantities and allowances in subsequent columns. When the unit of measure
differs from the unit of issue, the lowest unit of issue that will satisfy the required units of measure will be requisitioned.
e. Quantity Furnished 'with Equipment (Basic Issue Items Only). Not applicable.
f: Quantity Authorized (Items Troop Installed or
Authorized Only). Not applicable.
g. Quantity Incorporated in Unit. This column indicates the quantity of the item used in the equipment.
h. 15-Da!! Organizational Maintenance Allowances.
(1) The repair parts indicated by an asterisk in the allowance column represent those authorized for use at the
organizational category, and will be requisitioned on an "as required" basis, until stock-age is based on demand in
accordance with AR 710-2.
(2) Major Army commanders Pre authorize to approve reduction in the range of support items authorized for
use in units within their commands. Recommendations for increase in range of items authorized for use will be
forwarded to the Commander, US Army Electronics Command, ATTN:
AMSEL-MA-CW, Fort Monmouth, N.J., 07703.
(3) Allowance quantities are indicated in the special tools list section for special tools, TMDE, and other support
equipment.
i. 30-Day DS/GS Main tenance Allowances.
NOTE
Allowances in GS column are for GS maintenance only.
(1) The repair parts indicated by asterisk entries in separate allowance columns for DS and GS represent those
authorized for use at that category of maintenance to be requisitioned on an "as required" basis, until stockage is based
on demand in accordance with AR 710-2.
(2) Allowance quantities are indicated in the special tool lists section for special tools, TMDE, and other support
equipment.
,j. 1-Year Allowvances Per 100 Equipments/Contingency Planning Purposes. Column intentionally left blank.
k. Depot Maintenance Alloowance Per 100 Equipments. This column indicates opposite the first appearance of
each item the total quantity authorized for depot maintenance of 100 equipments.
l Illustration. Not applicable.
1-4. Special Information
Usable on codes are included in column 3. Uncoded items are applicable to all models. Identification of the usable on
codes used in this publication are-
Code
Used on
AEH
LS-166/U
1-5. Location of Repair Parts
a. This manual contains one cross reference index (sec IX) to be used to locate a repair part when either the
Federal stock number or reference number(manufacturer's part number) is known. The first column in the index is
prepared in numerical or alphanumeric sequence in ascending order. The reference numbers (manufacturer's part
numbers) are listed immediately following the last listed Federal stock number in the index of Federal stock numbers.
b. When the Federal stock number or reference number is known, follow the procedures given in (1) and (2) below.
(1) Refer to the index of Federal stock numbers (sec IX), and locate the Federal stock number or reference
number. The FSN and reference number are cross-referenced to the applicable figure and item number or
reference designation.
(2) Refer to the repair parts list (sec V and VII) and locate the figure number (col 7a-20P, 10a-34P) and item
number or reference designation (col 7b-20P, 10b-34P) as noted in the FSN index.
c. When the figure and item number or reference designation are known, scrutinize columns 7a and 7b-20P and
10a and O1b--35P, of the repair parts list (see V and VII) until the item is located.
d. When the FSN, reference number, figure number, and item number are not known, scrutinize column 3 of
the repair parts list (sec V and VII), which is arranged in alphabetical order.
1-6. Abbreviations
Not applicable.
1-7. Reporting of Equipment Manual Improvements
The reporting of errors, omissions, and recommendations for improving this publication by the individual
user is encouraged. Reports should be submitted on DA Form 2028 (Recommended Changes to Publica-
tions) and forwarded direct to Commander, US Army Electronics Command, ATTN: AMSEL-MA-CW,
Fort Monmouth, N.J., 07703.
4