Primary flight controls are those used by the pilot for immediate control of pitch, roll, yaw, and vertical motion of the rotorcraft.
[Amdt. 27-21, 49 FR 44434, Nov. 6, 1984]
source: Docket No. 5074, 29 FR 15695, Nov. 24, 1964, unless otherwise noted.
cite as: 14 CFR 27.673