Section 41725 - Prohibition on certain cell phone voice communications(a) PROHIBITION.-The Secretary of Transportation shall issue regulations- (1) to prohibit an individual on an aircraft from engaging in voice communications using a mobile communications device during a flight of that aircraft in scheduled passenger interstate or intrastate air transportation; and(2) that exempt from the prohibition described in paragraph (1) any-(A) member of the flight crew on duty on an aircraft;(B) flight attendant on duty on an aircraft; and(C) Federal law enforcement officer acting in an official capacity.(b) DEFINITIONS.-In this section, the following definitions apply:(1) FLIGHT.-The term "flight" means, with respect to an aircraft, the period beginning when the aircraft takes off and ending when the aircraft lands.(2) MOBILE COMMUNICATIONS DEVICE.- (A) IN GENERAL.-The term "mobile communications device" means any portable wireless telecommunications equipment utilized for the transmission or reception of voice data.(B) LIMITATION.-The term "mobile communications device" does not include a phone installed on an aircraft.Added Pub. L. 115-254, div. B, title IV, §403(a), Oct. 5, 2018, 132 Stat. 3328.