The U.S Federal Aviation Administration (FAA) is seeking input from the public on an advance notice of proposed rulemaking (#ANPRM) regarding the minimum rest period for Flight Attendants. In particular, the FAA seeks comments on how the FAA could implement a rulemaking to address the requirement of section 335(a) of the Federal Aviation Administration Reauthorization Act of 2018 (FAARA 2018) in a manner that maximizes benefits and minimizes costs. In some areas of this ANPRM, the FAA requests specific information. Whenever possible, please provide citations and copies of any relevant studies or reports on which you rely, including benefit and cost data as well as any additional data that supports your comment. Please include the identifying number of the specific question(s) to which you are responding. The FAA will use comments to inform the rulemaking. This action arises out of a statutory mandate in the FAA Reauthorization Act of 2018 that requires the FAA to increase the minimum rest period for flight attendants in domestic, flag, and supplemental operations who are scheduled for a duty period of 14 hours or less. Consistent with the statutory mandate, the FAA plans to amend its regulations to ensure that flight attendants scheduled to a duty period of 14 hours or less are given a scheduled rest period of at least 10 consecutive hours and that the rest period is not reduced under any circumstances. This document seeks input from the public to obtain more information about current domestic, flag, and supplemental operations with flight attendants and the potential benefits and costs to inform the rulemaking.