; and (2) received an original certificate of airworthiness issued by the Administrator on or after January 1, 2028. (c) Definitions In this section: (1) Covered airplane The term covered airplane means an airplane that— (A) is a subsonic jet that is a purpose-built freighter; (B) has a maximum takeoff mass greater than 180,000 kilograms but not greater than 240,000 kilograms; and (C) has a type design certificated prior to January 1, 2023. (2) Purpose-built freighter The term purpose-built freighter means any airplane that— (A) was configured to carry cargo rather than passengers prior to receiving an original certificate of airworthiness; and (B) is configured to carry cargo rather than passengers. 1106. Prohibition on mandates (a) Prohibition on mandates The Administrator may not require any contractor to mandate that employees of such contractor obtain a COVID–19 vaccine or enforce any condition regarding the COVID–19 vaccination status of employees of a contractor. (b) Prohibition on implementation The Administrator may not implement or enforce any requirement that— (1) employees of air carriers be vaccinated against COVID–19; (2) employees of the FAA be vaccinated against COVID–19