BendixKing KFD 840 - Manual (Page 66)

Honeywell Bendix/King KFD 840 Primary Flight Display
HSI Area KFD 840 PG PN 7450-0840-01
7-4 Rev E Oct 15, 2010
© Honeywell International Inc. Do not copy without express permission of Honeywell
Heading Select Bug Off-scale
When the compass is displayed in ARC HSI mode and the heading
select bug goes beyond the range, a
magenta off-scale arrow on the
side of the compass arc that is nearer to the selected heading points
toward the
magenta bug.
Figure 7-4: Heading Select Bug Off-Scale
Heading Data Invalid
If heading data is invalid,
cardinal and intermediate
headings,
the heading,
course selection, distance
readout, and identifier are
removed. A red
HDG FAIL
flag is displayed in the
middle upper portion of the
compass display.