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System Maintenance Manual

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Page 3-24 G1000/GFC700 System Maintenance Manual – C90A/C90GT/C90GTi King Air
Revision G 190-00682-01
The GRS 77 and GDC 74B configuration modules function differently than the rest of the system. The
GDC 74B’s configuration file is loaded directly to GDC internal memory. A copy of the file is stored in
the GDC configuration module.
The GRS 77 configuration module does not store any configuration settings. Instead, it stores calibration
data recorded during installation calibration procedures.
Figure 3-16. GRS/GDC Configuration Settings Storage