Airplane Flight Manual Supplement

Hawker Beechcraft C90A and C90GT King Air 190-00682-02 Rev. C
Page 84 of 95
ELECTRIC ELEVATOR TRIM
The electric elevator trim is standard with the G1000 system installation. The electric elevator trim can
be operated manually by the pilot using the pitch trim switches on the control wheel, or, automatically by
the autopilot. Electric Elevator trim switches are optional on the copilot’s control wheel. If pitch trim
switches are installed on the copilot’s control wheel, the pilot’s pitch trim inputs override those made by
the copilot
The ON/OFF toggle switch on the pedestal has been removed. Electric elevator trim will function if the
AFCS circuit breaker (right side circuit breaker panel) is set and the autopilot has satisfactorily completed
a preflight test.
Pitch trim rocker switches on the pilot’s control wheel manually control the electric elevator trim system.
NOSE DN at the top of the rocker switch, when depressed causes the elevator pitch trim servo to move
the trim tab in the upward direction resulting in the nose of the airplane pitching downward. The control
column will move in the forward direction and the pitch trim wheel will move forward in the nose down
direction. Depressing NOSE UP at the bottom of the rocker switch results in the opposite of the previous
motions with the airplane nose pitching up.
Runaway or malfunctioning trim can be interrupted by pressing and holding the red A/P Y/D DISC TRIM
INTRPT switch on either control wheel. Pulling the AFCS circuit breaker on the right side circuit breaker
panel will disable the electric elevator trim so it will not move when the TRIM INTRPT switch is released.
Figure 11, Electric Trim Switches, Pilot's Control Wheel