§ 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.

Controls Motion and effect
AileronRight (clockwise) for right wing down.
ElevatorRearward for nose up.
RudderRight pedal forward for nose right.

(2) Secondary.

Controls Motion 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.

Controls Motion and effect
Power or thrustForward to increase forward thrust and rearward to increase rearward thrust.
PropellersForward to increase rpm.
MixtureForward or upward for rich.
Carburetor air heatForward or upward for cold.
SuperchargerForward or upward for low blower. For turbosuperchargers, forward, upward, or clockwise, to increase pressure.

(2) Auxiliary.

Controls Motion and effect
Landing gearDown to extend.
[Doc. No. 5066, 29 FR 18291, Dec. 24, 1964, as amended by Amdt. 25-72, 55 FR 29778, July 20, 1990]