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MK XXII EGPWS Installation Manual
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• If the display is in normal MFD mode (not HSI backup, or SG backup) AND if Label 051 bit 11 transitions from 0
to 1 (rising edge), AND Checklist is not selected on the MFD, and TCAS Auto Pop Up is not occurring.
• The display will change to Map mode.
• The display will energize the Terrain selection relays.
• The display will annunciate “TERR”.
• The display will change to the range indicated by the EGPWS ARINC 429 Label 050.
•
When interfacing to a single display controller configuration the bus must be connected to both EGPWS input channels.
This prevents the EGPWS from reporting an external bus fault on the second channel.
•
Note that the Channel 429_422RX_1 polarity is shown reversed from ARINC 429 application.