CFR›Title 14›Chapter I›Part 139›Subpart E ContainsSections 139.401–139.403CorpusDaily eCFRDisplayed edition2026-04-27Last updated2026-04-27 Subpart E—Airport Safety Management System Sections 139.401 § 139.401 General requirements. 139.402 § 139.402 Components of Airport Safety Management System. 139.403 § 139.403 Airport Safety Management System implementation. SourceDocket FAA-2010-0997, Amdt. 139-28, 88 FR 11672, Feb. 23, 2023, unless otherwise noted. Previous D Subpart D—Operations