What does the term "Flight Time Limitations" (FTL) refer to?

The term "Flight Time Limitations" (FTL) specifically refers to regulations concerning commercial pilots' duty time limitations. These regulations are crucial for ensuring safety within the aviation industry, as they dictate the maximum amount of time pilots can operate an aircraft in order to prevent fatigue, which can significantly impair performance and increase the risk of accidents.

Flight Time Limitations are established to promote safety by ensuring that pilots receive adequate rest between flight duties and do not exceed prescribed flying hours. This is particularly important given that fatigue can have detrimental effects on a pilot's ability to make sound decisions and maintain situational awareness during flight operations.

By regulating the maximum number of flight hours a pilot can accumulate and specifying rest requirements, these regulations help to safeguard both the crew and passengers. In contrast, the other options focus on different aspects of aviation—maintenance schedules, insurance coverage, and passenger capacity—which do not pertain to the specific context of pilots' working hours and rest periods.