What is the requirement for a pilot who experiences fatigue?

The requirement for a pilot who experiences fatigue is to ensure they sleep before the flight. Fatigue can significantly impair a pilot's cognitive functions, decision-making ability, and overall performance. Prioritizing adequate rest is essential for maintaining the necessary level of alertness and safety during flight operations. By ensuring a good night's sleep before flying, pilots can mitigate the risks associated with fatigue and uphold their responsibilities to operate the aircraft safely.

Taking short breaks might help during a long period of flying, but it does not replace the need for complete rest before a flight. Reporting their condition to air traffic control might not be practical or necessary, as it could lead to actions that distract the pilot from safely managing the airplane. Lastly, flying under the influence of medications is a risky choice and often against regulations, especially if those medications can induce sleepiness or impair performance.