14 CFR § 25.779 - Motion and effect of cockpit controls.

---
identifier: "/us/cfr/t14/s25.779"
source: "ecfr"
legal_status: "authoritative_unofficial"
title: "14 CFR § 25.779 - Motion and effect of cockpit controls."
title_number: 14
title_name: "Aeronautics and Space"
section_number: "25.779"
section_name: "Motion and effect of cockpit controls."
chapter_name: "FEDERAL AVIATION ADMINISTRATION, DEPARTMENT OF TRANSPORTATION"
subchapter_number: "C"
subchapter_name: "AIRCRAFT"
part_number: "25"
part_name: "AIRWORTHINESS STANDARDS: TRANSPORT CATEGORY AIRPLANES"
positive_law: false
currency: "2026-04-05"
last_updated: "2026-04-05"
format_version: "1.1.0"
generator: "[email protected]"
authority: "49 U.S.C. 106(f), 106(g), 40113, 44701, 44702 and 44704; Pub. L. 115-254, 132 Stat 3281 (49 U.S.C. 44903 note)."
regulatory_source: "Docket No. 5066, 29 FR 18291, Dec. 24, 1964, unless otherwise noted."
cfr_part: "25"
---


# 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]