Honeywell Bendix/King KFD 840 Primary Flight Display
KFD 840 PG PN 7450-0840-01 HSI Area
Rev D July 12, 2010 7-3
© Honeywell International Inc. Do not copy without express permission of Honeywell
Heading Readout
The heading readout is a digital representation of the compass
heading. The heading readout is displayed as three digits, using
leading zeros when needed and is limited from 001 to 360 degrees.
Select Heading Readout AND Bug
Figure 7-3 Selected Heading Readout and Bug
A heading select bug (notched magenta rectangle) moves around
the compass when the HDG knob is rotated. The selected heading
readout is displayed below the selected heading annunciator in a
three-digit format, in the upper left portion of the HSI. The readout
range is 001 to 360.
Selecting HDG with the HDG knob will allow the selected heading to
be set. Pushing and holding the HDG knob will (SYNC) synchronize
the selected heading to the current aircraft heading.
If the aircraft is on a heading of 360 degrees with the 360 HSI
displayed and the heading SYNC is pushed, the heading bug may
be removed and the selected heading value may show dashes.
Turning the HDG knob will restore the display.
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