StacksVerified U.S. regulatory reference

14 CFR §135.147

Verified against eCFR.gov as of June 20, 2026View official text on eCFR.gov ↗
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.