Fatigue remains one of the most significant challenges in aviation safety. Recent studies and surveys by organizations like the European Cockpit Association (ECA) and the British Airline Pilots Association (BALPA) show that between 56% and 75% of commercial pilots admit to having fallen asleep in the cockpit at some point. Perhaps more alarming is that roughly 29% of pilots reported waking up to find that their co-pilot was also asleep. To address this, many international airlines have formalized "Controlled Rest," a safety procedure where one pilot can take a brief 40-minute nap during the "cruise" phase of a flight while the other remains fully alert. This is designed to prevent "microsleeps" during critical phases like takeoff and landing. Despite these measures, over 50% of pilots surveyed in 2025 felt that fatigue risk was "not well managed" by their respective airlines, highlighting an ongoing tension between scheduling and safety.