Honeywell

MK XXII EGPWS Installation Manual

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.

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Honeywell MKXXII installation manual Honeywell MK Xxii Egpws Installation Manual