CFR›Title 14›Chapter I›Part 71›Subpart B ContainsSection 71.41CorpusDaily eCFRDisplayed edition2026-09-29Last updated2026-09-29 Subpart B—Class B Airspace Sections 71.41 § 71.41 Class B airspace. Previous A Subpart A—Class A Airspace Next C Subpart C—Class C Airspace