14 CFR 216.1: Definitions.

(a) As used in this part, unless the context otherwise requires:

Blind sector traffic means revenue traffic, carried by a foreign air carrier on a flight operating in air transportation, which is enplaned at one foreign point and deplaned at another foreign point, where at least one of such points is not named as a terminal or intermediate point in the carrier's applicable foreign air carrier permit.

Note:

This definition shall not be deemed to include the carriage of authorized beyond homeland traffic (i.e., traffic carried between a point named in a carrier's foreign air carrier permit and a point beyond a homeland terminal point authorized under such permit).

Revenue traffic means persons, property or mail carried for compensation or hire.

(b) Terms defined in 49 U.S.C. 40102 have the meaning expressed in such definitions.