D-5. How to Locate Repair Parts
30-Day DS Maintenance Allowance.
(1) Items authorized for use as required not
When Federal stock number or reference
for initial stockage are identified with asterisk in the
number is unknown:
Using the table of contents
(2) The allowance columns are divided three
determine the assembly group within which the repair
subcolumns. The quantitative allowance special tools for
part belongs. This is necessary since illustrations are
DS level of maintenance represent initial stockage for a
prepared for assembly groups, and listings are divided
30-day period the number of equipments supported.
into the same groups.
(2) Second. Find the illustration covering the
Illustration. This column is divided as
assembly group to which the repair part belongs.
(3) Third. Identify the repair part on the
(1) Figure number. Indicates the figure
illustration and note the illustration figure and item
number of the illustration on which the item shown.
number of the repair part.
(4) Fourth. Using the Repair Parts Listing,
(2) Item number. Indicates the callout number
used to reference the item on the illustration.
find the assembly group to which the repair part belongs
and locate the illustration figure and item number noted
D4. Special Information
on the illustration.
When the Federal
The basis of issue for authorized special
reference number is known:
tools, test and support equipment is the number of end
items of equipment supported and number of
(1) First. Using the Index of Federal Stock
maintenance personnel allocated perform the required
Numbers and Reference Numbers find the pertinent
Federal stock number or reference number. This index
is in ascending FSN sequence followed by a list of
Parts which require manufacture or
reference numbers in alpha-numeric sequence, cross-
assembly of a maintenance level higher than that
referenced to the illustration figure number and item
authorized for installation will indicate in source column
the higher maintenance level.
(2) Second. Using the Repair Parts Listing,
Repair parts kits and gasket sets appear as
find the assembly group of the repair part and the
the last entries in the repair parts listing for group or
illustration figure number and item number referenced in
assembly to which they apply.
the Index of Federal Stock Numbers and Reference