Which symbol is used to enter a Non-mission capable fault on a PMCS Form?

• A. X
• B. O
• C. Delta
• D. Star

Answer: (A)

In PMCS notation, a fault that makes the item non-mission capable is marked with an X. This simple symbol quickly flags deficiencies that prevent the equipment from performing its intended mission, signaling that the item needs repair before it can be considered ready. The O symbol typically denotes that the item is serviceable or mission capable, so it wouldn’t be used to indicate a fault. Delta and Star aren’t part of the standard PMCS markings for recording non-mission capable faults, so they wouldn’t accurately convey the status. Using X keeps the language of the form consistent and immediately understandable to everyone involved in maintenance and readiness.