Final answer:
The question is about FAA limitations on aircrew duty periods when an autopilot axis is inoperative, which is a safety protocol to prevent pilot fatigue and ensure safe flights.
Step-by-step explanation:
The question pertains to rules set by the Federal Aviation Administration (FAA) regarding the limitations on duty periods for aircrew when an autopilot axis is inoperative. This falls under aviation safety protocols and duty regulations, which are critical for preventing fatigue among pilots and ensuring the safety of flights.
When an autopilot axis is inoperative, aircrew duty period and augmented aircrew duty period limitations must be appropriately adjusted to preserve the well-being of the crew and passengers and maintain operational safety standards. Although the specific limitations are not stated in the given information, the FAA has clear guidelines for these situations, which would typically be outlined in a pilot's operating handbook or company procedures.