Table 7-2. Essentiality Codes (ESNTL-CD).
This code is a single character code that indicates the degree to which the failure of the component,
assembly, subassembly, repair part, etc. affects the ability of the end item or system to perform its
End item is mission essential.
End Item Is not mission essential.
Failure of this part will render the end item Inoperable.
Failure of this part will not render the end item inoperable.
Item does not qualify for the assignment of code 1 but is needed for personnel safety.
Item does not qualify for the assignment of code 1 but is needed for legal, climatic, or
other requirements peculiar to the planned operational environment of the end item.
Item does not qualify for the assignment of code 1 but is needed to prevent impairment
of, or the temporary reduction of, operational effectiveness of the end item.