Page 2-8
G1000 Nav III Line Maintenance Manual
Rev. L
190-00352-00
The following annunciations may appear in the AFCS Annunciation field:
Annunciation Condition
Solutions
AFCS System
Failure
•
Ensure that the G1000 system is in proper working order.
Check specifically for proper operation of the:
•
GIA 63W Integrated Avionics Unit
•
GRS 77 AHRS
•
GDC 74A Air Data Computer
•
All GSA 81 Servos
•
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.
•
If the OAT and TAS is Red-X’d and the attitude indication
is present, replace the GDC74 config module.
o
If the condition is still present, replace the config
module wiring harness.
•
See Section 2.11 for further troubleshooting.
Pitch Axis Failure
Pitch Trim Axis
Failure
Roll Axis 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.
Elevator Mistrim
Down
Elevator Mis-Trim
Up
•
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
Right
Aileron Mistrim Left
•
Check for possible fuel imbalance.
•
Check aileron control rigging.
•
If mistrim condition still exists remove and replace the roll
servo.
Pre-Flight Test
•
Reset servo power by cycling the circuit breaker.
•
See Section 2.11 for further troubleshooting.
Содержание G1000 NAV III
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