G1000 V8.XX S/W Load and Post Install Checkout – Columbia 350/400 Page 3-29
190-00577-04 Revision 1
To perform the following procedures press the following softkeys:
a) 9
b) 10
c) 11
d) 12 (Far Right softkey)
1. Level the aircraft to within ±0.25° of zero pitch and zero roll using Columbia maintenance
procedures in the Columbia 350/400 Airplane Maintenance Manual.
2. Initiate the AHRS Ground Pitch/Roll Aircraft Level compensation mode by performing the
following steps:
a) Ensure that the No. 1 GRS 77 is selected.
b) Select PITCH/ROLL OFFSET, then press the ENT key.
c) Follow the checklist items displayed on the PFD and press the ENT key as each one
is completed or confirmed. When the CALIBRATE field is blinking, press the ENT
key to begin the procedure.
d) After several seconds, a new checklist appears in the lower half of the PFD. Press
the ENT key as each item is confirmed. When the CONFIRM AIRCRAFT IS
LEVEL field is blinking, press the ENT key to continue.
3. The result of the pitch/roll offset compensation is displayed on the PFD. If successful, the AHRS
records the required pitch and roll offsets, informs the operator of a successful conclusion and
returns to normal operation.
4. Press the ENT key on the PFD to conclude this procedure.
5. Restart both displays in normal mode and proceed to Section 3.11.
3.11 Engine Start
To carry out the two remaining GRS/GMU procedures, the aircraft engine must be started. In order to
start the engine, all engine/airframe transducers must have been checked to ensure proper operation.
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