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Federal Aviation Regulations

Sec. 23.779 — 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:

   Motion and effect
(1) Primary controls:
AileronRight (clockwise) for right wing down.
ElevatorRearward for nose up.
RudderRight pedal forward for nose right.
(2) Secondary controls:
Flaps (or auxiliary lift devices)Forward or up for flaps up or auxiliary device stowed; rearward or down for flaps down or auxiliary device deployed.
Trim tabs (or equivalent)Switch motion or mechanical rotation of control to produce similar rotation of the airplane about an axis parallel to the axis control. Axis of roll trim control may be displaced to accommodate comfortable actuation by the pilot. For single-engine airplanes, direction of pilot's hand movement must be in the same sense as airplane response for rudder trim if only a portion of a rotational element is accessible.

(b) Powerplant and auxiliary controls:

   Motion and effect
(1) Powerplant controls:
Power (thrust) leverForward to increase forward thrust and rearward to increase rearward thrust.
PropellersForward to increase rpm.
MixtureForward or upward for rich.
FuelForward for open.
Carburetor, air heat or alternate airForward or upward for cold.
SuperchargerForward or upward for low blower.
Turbosuper-chargersForward, upward, or clockwise to increase pressure.
Rotary controlsClockwise from off to full on.
(2) Auxiliary controls:
Fuel tank selectorRight for right tanks, left for left tanks.
Landing gearDown to extend.
Speed brakesAft to extend.

[Amdt. 23–33, 51 FR 26656, July 24, 1986, as amended by Amdt. 23–51, 61 FR 5136, Feb. 9, 1996]

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