14 C.F.R. § 141.45 Ground training facilities.
Title 14 - Aeronautics and Space
An applicant for a pilot school or provisional pilot school certificate must show that: (a) Each room, training booth, or other space used for instructional purposes is heated, lighted, and ventilated to conform to local building, sanitation, and health codes; and (b) The training facility is so located that the students in that facility are not distracted by the training conducted in other rooms, or by flight and maintenance operations on the airport.
Title 14: Aeronautics and Space
PART 141—PILOT SCHOOLS
Subpart B—Personnel, Aircraft, and Facilities Requirements
§ 141.45 Ground training facilities.
