(4) Subsequent changes to allowances will be
stock number is not listed, refer to the reference number
limited as follows: No change in the range of items is
(manufacturer's part number) immediately following the
If additional items are considered
Federal stock number. b. When the Federal stock
necessary, recommendation should be forwarded to
number is known, follow the procedures given in (1) and
Commanding General, U.S.
Monmouth, N.J., 07703, for exception or revision to the
(1) Refer to the index of Federal stock
Revisions to the range of
V) and locate the Federal Stock'
authorized will be made by the USA ECOM National
number. The FSN is cross-referenced to the applicable
Maintenance Point based upon engineering experience,
figure and reference designation.
demand data, or TAERS information.
(2) When the reference designation is
deter- mined, refer to the reference designation index
g. Illustration, Column 7.
This column is
(sec. VI). The reference designations are listed in
divided as follows:
order and are cross-
referenced to the page number on which they appear in
(1) Figure number, column 7A. Indicates
the repair parts list (sec. III). Refer to the page number
the figure number of the illustration in which the item is
noted in the index and locate the reference designation
(col. 7b). If the word "REF" appears in the allowance
column for the repair part, note the Federal stock
(2) Item number or reference designation,
number (col. 2) or manufacturer's part number (col. 3).
column 7b. Indicates the reference designation number
Refer to the
FSN index and note the reference
used to identify the item in the illustration.
designation for that FSN or part number. Refer to the
reference designation index and note the page number
given for the reference designation. Refer to the page
noted in the RPSTL (sec. III) and locate the reference
designation in column 7b of the repair parts list.
Repair parts mortality is computed from failure rates
derived from experience factors with the individual parts
c. When the reference designation is known,
in a variety of equipments. Variations in the specific
follow the procedures given in b(2) above.
application and periods of use of electronics equipment,
the fragility of electronic piece parts, plus intangible
d. When neither the FSN nor reference
material and quality factors intrinsic to the manufacture
designation is known, identify the part in the illustration
of electronic parts, do not permit mortality to be based
and follow directions given in c above or scrutinize
on hours of end item used. However, long periods of
column 3 of the repair parts list., D-6. Federal Supply
continuous use under adverse conditions are likely to
Codes for Manufacturers
increase repair parts mortality.
Location of Repair Parts
a. This appendix contains two cross-reference
Code............................ Manufacturer's Name
indexes (sec. V and sec. VI) to be used to locate a
repair part when either the Federal stock number,
75915 .......................... Littelfuse Inc.
reference number (manufacturer's part number), or
80063 .......................... Army Electronics Command
reference designation is known. The first column in
81349 .......................... Military Specifications
each index is prepared in numerical and/or alpha-
96906 .......................... Military Standards
numeric sequence in ascending order. Where a Federal