Regulations last checked for updates: Feb 11, 2026

Title 14 - Aeronautics and Space last revised: Dec 19, 2026
§ 135.147 - Dual controls required.

No person may operate an aircraft in operations requiring two pilots unless it is equipped with functioning dual controls. However, if the aircraft type certification operating limitations do not require two pilots, a throwover control wheel may be used in place of two control wheels.

authority: 49 U.S.C. 106(f), 40113, 41706, 44701-44702, 44705, 44709, 44711-44713, 44715-44717, 44722, 44730, 45101-45105; Pub. L. 112-95, 126 Stat. 58 (49 U.S.C. 44730)
source: Docket 16097, 43 FR 46783, Oct. 10, 1978, unless otherwise noted.
cite as: 14 CFR 135.147