14 CFR · Part 91
14 CFR § 91.221
Traffic alert and collision avoidance system equipment and use.
(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.
Referenced By
Interpretations of This Section (1)
Documents that cite this section, found in their catalog metadata or text. Listed by date, not by significance.
Reflects the eCFR edition current as of July 6, 2026. Retrieved from ecfr.gov on July 17, 2026.
Primary Source