In the context of mechanical systems, which term best describes capability to perform a task but with limitations?

The term that best describes the capability to perform a task but with limitations is "Partially Mission Capable." This indicates that while the system can perform some functions or tasks, it is not fully equipped or able to perform all required duties effectively. This might stem from certain constraints such as equipment failure, reduced operational capacity, or missing components, which prevent it from achieving full functionality.

Fully Mission Capable refers to a system that can perform all its designated tasks without any restrictions, thus not accounting for limitations. Not Mission Capable implies that the system cannot perform any of its required tasks at all, indicating a complete lack of functionality. Mission Ready typically suggests a state of preparedness to operate effectively, which also does not convey the idea of limitations in performance. Therefore, "Partially Mission Capable" accurately encapsulates the ability to carry out tasks while recognizing that there are constraints affecting its overall capability.