Federal Aviation Regulations
Sec. 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 |
|---|---|
| Aileron | Right (clockwise) for right wing down. |
| Elevator | Rearward for nose up. |
| Rudder | Right 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 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.
| Controls | Motion 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]
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