14 CFR 187.51: Applicability of overflight fees.

(a) Except as provided in paragraphs (c) or (d) of this section, any person who conducts an overflight through either Enroute or Oceanic airspace must pay a fee as calculated in § 187.53.

(b) Services. Persons covered by paragraph (a) of this section must pay a fee for the FAA's rendering or providing of certain services, including but not limited to the following:

(1) Air traffic management.

(2) Communications.

(3) Navigation.

(4) Radar surveillance, including separation services.

(5) Flight information services.

(6) Procedural control.

(7) Emergency services and training.

(c) The FAA does not assess a fee for any military or civilian overflight operated by the United States Government or by any foreign government.

(d) Fees for overflights through U.S.-controlled airspace covered by a written FAA agreement or other binding arrangement are charged according to the terms of that agreement or arrangement unless the terms are silent on fees.