S.3421: A bill to require air carriers to provide all flight attendants with scheduled rest periods of at least 10 consecutive hours between duty periods and to comply with fatigue management plans for flight attendants that have been approved by the Federal Avia

This bill requires air carriers to provide a 10-hour rest period to a flight attendant who is scheduled to a duty period of up to 14 hours. Current regulations generally mandate a nine-hour rest period but allow an eight-hour rest period under certain circumstances. Air carriers must comply with specified fatigue risk management plan requirements, subject to civil penalties.

(Source: Library of Congress)