Code of Federal Regulations

Title 14 - Aeronautics and Space
Volume: 1Date: 2021-01-01Original Date: 2021-01-01Title: Section § 25.779 - Motion and effect of cockpit controls.Context: Title 14 - Aeronautics and Space. CHAPTER I - FEDERAL AVIATION ADMINISTRATION, DEPARTMENT OF TRANSPORTATION. SUBCHAPTER C - AIRCRAFT. PART 25 - AIRWORTHINESS STANDARDS: TRANSPORT CATEGORY AIRPLANES. Subpart D - Design and Construction. - Personnel and Cargo Accommodations.
§ 25.779 Motion and effect of cockpit controls. Cockpit controls must be designed so that they operate in accordance with the following movement and actuation: (a) Aerodynamic controls: (1) Primary.
ControlsMotion and effect
Aileron Right (clockwise) for right wing down.
Elevator Rearward for nose up.
Rudder Right pedal forward for nose right.
(2) Secondary.
ControlsMotion and effect
Flaps (or auxiliary lift devices) Forward for flaps up; rearward for flaps down.
Trim tabs (or equivalent) Rotate to produce similar rotation of the airplane about an axis parallel to the axis of the control.
(b) Powerplant and auxiliary controls: (1) Powerplant.
ControlsMotion and effect
Power or thrust Forward to increase forward thrust and rearward to increase rearward thrust.
Propellers Forward to increase rpm.
Mixture Forward or upward for rich.
Carburetor air heat Forward or upward for cold.
Supercharger Forward or upward for low blower. For turbosuperchargers, forward, upward, or clockwise, to increase pressure.
(2) Auxiliary.
ControlsMotion and effect
Landing gear Down to extend.
[Doc. No. 5066, 29 FR 18291, Dec. 24, 1964, as amended by Amdt. 25-72, 55 FR 29778, July 20, 1990]