Section 25.779

14 CFR Ch. I (1-1-19 Edition)

confusion as to the engines they control.
(e) Wing flap controls and other auxiliary lift device controls must be located on top of the pedestal, aft of the
throttles, centrally or to the right of
the pedestal centerline, and not less
than 10 inches aft of the landing gear
control.
(f) The landing gear control must be
located forward of the throttles and
must be operable by each pilot when
seated with seat belt and shoulder harness (if provided) fastened.
(g) Control knobs must be shaped in
accordance with Section 25.781. In addition,
the knobs must be of the same color,
and this color must contrast with the
color of control knobs for other purposes and the surrounding cockpit.
(h) If a flight engineer is required as
part of the minimum flight crew (established under Section 25.1523), the airplane
must have a flight engineer station located and arranged so that the flight
crewmembers can perform their functions efficiently and without interfering with each other.

(1) Primary.
Controls

Motion and effect

Aileron .........................

Right (clockwise) for right wing
down.
Rearward for nose up.
Right pedal forward for nose right.

Elevator .......................
Rudder .........................

(2) Secondary.
Controls
Flaps (or auxiliary lift
devices).
Trim tabs (or equivalent).

(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.
Forward to increase rpm.
Forward or upward for rich.
Forward or upward for cold.
Forward or upward for low blower.
For turbosuperchargers, forward,
upward, or clockwise, to increase
pressure.

Propellers ....................
Mixture .........................
Carburetor air heat ......
Supercharger ...............

[Doc. No. 5066, 29 FR 18291, Dec. 24, 1964, as
amended by Amdt. 25-46, 43 FR 50596, Oct. 30,
1978]

Section 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:
Section 25.781

Motion and effect
Forward for flaps up; rearward for
flaps down.
Rotate to produce similar rotation of
the airplane about an axis parallel
to the axis of the control.

(2) Auxiliary.
Controls
Landing gear ...............

Motion and effect
Down to extend.

[Doc. No. 5066, 29 FR 18291, Dec. 24, 1964, as
amended by Amdt. 25-72, 55 FR 29778, July 20,
1990]

Cockpit control knob shape.

spaschal on DSK3GDR082PROD with CFR

Cockpit control knobs must conform to the general shapes (but not necessarily
the exact sizes or specific proportions) in the following figure:

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