Abnormal Operation; Suspected Autopilot Malfunction; Level Mode - Garmin G1000 NXi Pilot's Manual

AUTOMATIC FLIGHT CONTROL SYSTEM

7.6 ABNORMAL OPERATION

SUSPECTED AUTOPILOT MALFUNCTION

NOTE: Consult the aircraft documentation for the location of circuit breakers as well as specifics that may
supplement or amplify this procedure.
If an autopilot failure or trim failure is suspected to have occurred, perform the following steps:
1) Firmly grasp the control wheel.
2) Press and hold the AP DISC Button. The autopilot will disconnect and power is removed from the trim motor.
Power is also removed from all primary servo motors and engaged solenoids. Note the visual and aural alerting
indicating autopilot disconnect.
3) Retrim the aircraft as needed. Substantial trim adjustment may be needed.
4) Pull the appropriate circuit breaker(s) to electrically isolate the servo and solenoid components.
5) Release the AP DISC Button.

LEVEL MODE

Level (LVL) mode also becomes active as a function of Electronic Stability and Protection (ESP). Refer to the
Additional Features section for a detailed discussion of the optional ESP feature.
When the normal flight envelope thresholds have been exceeded for more than 50% of the last 20 seconds,
Level mode is activated. The autopilot will engage and provide input to bring the aircraft back into straight and
level flight based on zero degrees roll angle and zero feet per minute vertical speed. An aural engaging autopilot
alert sounds and the lateral and vertical flight director annunciations will display "LVL". The AFCS will remain
in Level mode until the pilot selects another mode.
398
Roll
Command Bars Indicate
Level with the Horizon
Figure 7-33 Level Mode Annunciation
Garmin G1000 NXi Pilot's Guide for the Cessna NAV III
Pitch
190-02177-02 Rev. A