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IFD540/440 Shared Data in Dual installations "Cross-sync"

The Following Interface Information is "FOR REFERENCE USE ONLY" and is not FAA Approved Data.  Please see the applicable STC Installation manuals, or other Approved documentation for installation approval.

In installations with dual IFDs, the #1 IFD is the "master" and the #2 IFD is the "slave," though data is shared in both directions.  The #1/#2 designation is achieved via the dip switch settings on the RH side of the IFD.

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  • 29-May-2019