C.F.R. » Title 14 » CHAPTER I—FEDERAL AVIATION ADMINISTRATION, DEPARTMENT OF TRANSPORTATION › SUBCHAPTER F—AIR TRAFFIC AND GENERAL OPERATING RULES › PART 91—GENERAL OPERATING AND FLIGHT RULES › Subpart C—Equipment, Instrument, and Certificate Requirements

14 C.F.R. § 91.221

Traffic alert and collision avoidance system equipment and use

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(a) All airspace: U.S.-registered civil aircraft. Any traffic alert and collision avoidance system installed in a U.S.-registered civil aircraft must be approved by the Administrator.

(b) Traffic alert and collision avoidance system, operation required. Each person operating an aircraft equipped with an operable traffic alert and collision avoidance system shall have that system on and operating.