MIL-DTL-38769E
APPENDIX A
A.3.8.3 First level of assembly code construction. Alphabetic and numeric characters will be used as
the third character of the WUC to designate irst level of assembly below major system. Thirty three
(33) separate levels may be identiied in this manner. For example:
33000
- SYSTEM
- FIRST LEVEL OF ASSEMBLY
33A00 through
33Z00
- FIRST LEVEL OF ASSEMBLY
33100 through
33900
A.3.8.4 Second level assembly code construction. Alphabetic and numeric characters will be used as the
fourth character of the WUC to designate second level of assembly below major system. Thirty-three
separate levels may be identiied in this manner. For example:
33000
- SYSTEM
33A00
- FIRST LEVEL OF ASSEMBLY
- SECOND LEVEL OF ASSEMBLY
33AA0 through
33AZ0
then
- SECOND LEVEL OF ASSEMBLY
33A10 through
33A90
A.3.8.5 Third level assembly code construction. Alphabetic and numeric characters will be used as the ifth
character of the WUC to designate third or lowest level of assembly below the major system. Thirty-two
levels may be identiied in this manner. The number "99" is used in the fourth and ifth positions to
indicate Not Otherwise Coded (NOC). For example:
33000
- SYSTEM
33A00
- FIRST LEVEL OF ASSEMBLY
33AA0
- SECOND LEVEL OF ASSEMBLY
- THIRD OR LOWEST LEVEL OF ASSEMBLY
33AAA through
33AAZ
then
- THIRD OR LOWEST LEVEL OF ASSEMBLY
33AA1 through
33AA8
33A99
- NOC (FIRST LEVEL OF ASSEMBLY)
A.3.8.5.1 Use of "99 - not otherwise coded". The number "99" is used in the fourth and ifth characters of
the WUC, followed by "NOC." This code is used to provide a WUC for components that do not have
speciic codes assigned. NOC codes will relate to the irst level of assembly, when the irst level of assembly
is the third character of the WUC. When the third character is the end item (homogeneous group), the NOC
code will relate to the end item rather than the irst level of assembly. The "99 NOC" code will appear as
the last entry under the last component in the irst level of assembly (or end item for homogeneous groups)
breakout. There will be a spaced separation between the last component of the irst level of assembly/end
item and the NOC code to provide easy recognition of the NOC code. The number "99" will not be used
in the fourth and ifth positions of the WUC to identify any speciic type of equipment.
A.3.8.6 Numerics. Numerics may be assigned irst in the third, fourth, and ifth positions of the WUC,
when there is positive assurance that the numeric coding capacity will not be exceeded during initial
code assignment, or by future equipment additions or modiications.
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