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G1000 System Maintenance Manual
Page 5-105
190-00903-00
Rev.
A
Table 5-2 lists the annunciations may appear in the AFCS annunciation field.
Table 5-2. AFCS Annunciations
Condition
Annunciation
Recommended Actions
Pitch Failure
Roll Failure
MET Switch
Stuck, or Pitch
Trim Axis
Control Failure
•
Check the AUX – SYSTEM STATUS page to see if the servo is
online (green check).
•
Check that the affected servo is receiving power.
•
Check the servo wiring and connector.
•
Ensure PTRM switches are not stuck.
•
If failure condition still exists, remove and replace the affected
servo.
AFCS System
Failure
•
Check that no red X’s are present on the MFD and PFDs.
•
Check that there are no Alert Messages present in the PFD Alert
window. Correct any software or configuration errors noted.
•
Go to the AUX SYSTEM STATUS page on the MFD and verify
that all LRUs have a ‘green’ check.
•
Download GIA fault logs per Section 5.1.9.6 and review for
failure information.
•
If the OAT and TAS is Red-X’d and the attitude indication is
present, troubleshoot per Section 5.1.2.1.
Emergency
Descent Mode
•
AP engaged when aircraft altitude above 30,000 ft and cabin
pressurization is lost.
•
Selected Heading set 90° left of current heading; Selected
Altitude set to 15000 ft.
Elevator
Mistrim Up
Elevator
Mistrim Down
•
If mistrim annunciations persist, check the Pitch Trim servo for
proper operation. Verify that the servo is online at the AUX –
SYSTEM STATUS page.
•
Check the Pitch Trim servo wiring and connector. Ensure the
servo is receiving power.
•
Check the aircraft trim control rigging.
•
If mistrim condition still exists, remove and replace the affected
servo.
Aileron Mistrim
Left
Aileron Mistrim
Right
•
Check for possible fuel imbalance.
•
Check aileron control rigging.
•
If mistrim condition still exists remove and replace the roll servo.
Rudder Mistrim
Left
Rudder Mistrim
Right
•
Check the AUX – SYSTEM STATUS page to see if the servo is
online (green check).
•
Check that the affected servo is receiving power.
•
Check the servo wiring and connector.
•
If failure condition still exists, remove and replace the affected
servo.
