C 3, TM 11-4920-292-15
age for a 30-day period for the number of equip-
the allowance columns. Items authorized for use
ments supported.
as required, but not for initial stockage, are
(3) Determination of the total quantity of
identified with an asterisk in the allowance col-
parts required for maintenance of more than 100
umn.
of these equipments can be accomplished by
(2) The quantitative allowances for organi-
converting the equipment quantity to a decimal
zational level of maintenance represents one ini-
factor by placing a decimal point before the next
ial prescribed load for a 15-day period for the
umber of equipments supported. Units and or-
to last digit of the number to indicate hun-
ganizations authorized additional prescribed
dredths, and multiplying the decimal factor by
loads will multiply the number of prescribed
the parts quantity authorized in the 51-100 al-
lowance column. Example, authorized allowance
loads authorized by the quantity of repair
parts reflected in the density column applicable
for 51-100 equipments is 40; for 150 equipments
multiply 40 by 1.50 or 60 parts required.
to the number of items supported to obtain the
total quantity of repair parts authorized.
h. One-Year Allowance per 100 Equipments/
(3) Organizational units providing main-
Contingency Planning Purposes. Indicates oppo-
tenance for more than 100 of these equipments
site the first appearance of each item the total
shall determine the total quantity of parts re-
quantity required for distribution and contin-
quired by converting the equipment quantity to
gency planning purposes. The range of items indi-
a decimal factor by placing a decimal point before
cates total quantities of all authorized items re-
the next to last digit of the number to indicate
quired to provide for adequate support of 100
hundredths, and multiplying the decimal factor
equipments for 1 year.
by the parts quantity authorized in the 51-100
i. Depot Maintenance Allowance per 100
allowance column. Example, authorized allow-
Equipments, Indicates opposite the first appear-
ance for 51-100 equipments is 40; for 150
ance of each item the total quantity authorized
equipments multiply 40 by 1.50 or 60 parts re-
for depot maintenance of 100 equipments. Sub-
quired.
sequent appearances of the same item wil have
(4) Subsequent changes to allowances will
the letters "REF" in the allowance column.
be limited as follows: No change in the range of
Items authorized for use as required, but not for
items is authorized. If additional items are con-
initial stockage, are identified with an asterisk
sidered necessary, recommendation should be
in the allowance column.
forwarded to Commanding General, U.S. Army
Electronics Command, ATTN: AMSEL-ME-
j. Illustrations.
NMP-EM, Fort Monmouth, N.J. 07703 for
(1) Figure number. Indicates the figure
exception or revision to the allowance list. Revi-
number in which the item is shown.
sions to the range of items authorized will be
(2) Item number or reference designation.
made by the USAECOM National Maintenance
Indicates the item number or reference designa-
Point based upon engineering experience, demand
tion used to identify the item in the illustration.
rate, or TAERS information.
The item number will appear directly above the
reference designation (shown in parentheses).
g. 30-Day DS/GS Maintenance Allowances.
NOTE
Allowances in GS column are for GS
C-4. Special Information
a. Repair parts mortality is computed from
maintenance only.
failure rates derived from experience factors with
(1) The allowance columns are divided into
the individual parts in a variety of equipments.
three subcolumns. Indicated in each subcolumn,
Variations in the specific application and periods
opposite the first appearance of each item, is
of use of electronics equipment, the fragility of
the total quantity of items authorized for the
electronic piece parts, plus intangible material
number of equipments supported. Subsequent
and quality factors intrinsic to the manufacture
appearances of the same item will have the letters
of electronic parts, do not permit mortality to
"REF" in the applicable allowance columns.
be based on hours of end item use. However,
Items authorized for use as required, but not for
long periods of continuous use under adverse
initial stockage, are identified with an asterisk
conditions are likely to increase repair parts
in the allowance column.
mortality.
(2) The quantitative allowances for DS/GS
b. Parts which require manufacture or assem-
levels of maintenance will represent initial stock-
C-2.1
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