In 2026, the FAA strictly enforces the 10-hour mandatory rest rule for flight attendants, a high-value safety regulation that became official in late 2022. This rule requires that flight attendants be given a minimum of 10 consecutive hours of rest between duty periods of 14 hours or less. Most importantly, the airline is legally prohibited from reducing this rest period under any circumstances, a major shift from previous rules that allowed rest to be "compressed" to 8 hours in certain operational scenarios. This premier regulation is designed to combat "human-factor" safety risks caused by fatigue among cabin crew, who are essential for emergency evacuations and onboard security. For 2026 airlines, this has necessitated a high-quality increase in staffing levels to manage schedules, ensuring that every crew member you meet on a U.S. domestic or international flight is properly rested and alert to handle their safety-critical duties.