G1000 Supplemental Maintenance Manual
Page 7-38
Textron Nav III Series
Revision 3
190-02128-04
completion of a 30
turn. If this scenario is encountered, it is best for the
operator to ignore the “HOLD POSITION” command and instead use outside
references to complete the approximate 30
turn. Instead of using the PFD
instruction to turn as a real-time indication of when to turn, simply judge the 30°
(±5°) turn increments of the aircraft by using the compass rose radials.
Dwelling at these 30
increments for the time recommended by the PFD should
result in successful calibration.
13. The PFD guides the operator to dwell at multiple headings around a complete circle.
NOTE
Due to high winds or excessive airframe vibration, the operator may encounter
a condition where the PFD restarts the 18-second countdown without full
completion of the previous countdown. If this is encountered more than once
for a given station, the operator should begin turning to the next station
(approximately 30
). A minimum of 2 successful stations per quadrant is
required, where a successful station is a full 18-second countdown followed by
instruction to move. Ensure that at least 2 stations per quadrant are completed.
Thus, it may sometimes be required to dwell at a station after a countdown
restart. A maximum of 30 stations is allowed for the entire calibration
procedure. If too many countdown restarts are encountered, the calibration
will fail with the message, “TOO MANY STATIONS.”
14. Repeat the turn-and-stop process until the PFD advises that a successful calibration is
complete. The GRS AHRS/GSU ADAHRS then enters its normal operational mode.
Press the ENT button on the PFD to conclude this procedure.
Содержание G1000 NXi
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