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9.
MISCELLANEOUS DATA AREA
WIND, GROUND SPEED, TRUE AIRSPEED, AND
OUTSIDE AIR TEMPERATURE
Wind
X-Y (Cartesian) format consists of a lateral, XW – Crosswind, digital
wind speed and arrow and a longitudinal, HW – Headwind, digital
wind speed and arrow. The HW, head wind, label does not change
for a tail wind; it is indicated by the direction arrow.
The wind calculation is based upon the indicated airspeed. To obtain
the most accurate wind information, correct the indicated airspeed to
calibrated airspeed using the aircraft AFM/POH airspeed corrections,
if available, and then calculate the True airspeed. The wind values
can then be calculated based upon the most accurate true airspeed.
KFD 840 PG PN 7450-0840-01
Rev C May 28, 2010
©
Honeywell International Inc. Do not copy without express permission of Honeywell
Honeywell Bendix/King KFD 840 Primary Flight Display
The wind, cross wind (XW) and
Head wind (HW), ground speed
(GS), true airspeed (TAS), and
outside air temperature (OAT)
labels are located on the left
side of the HSI.
The wind display consists of a
digital readout for wind speed in
knots and arrows for direction.
The wind information is only
available from GPS1 and it
must be a digital GPS. If GPS1
is analog or is inoperable, wind
information
displayed. Wind will not be
available if the installed GPS
does not provide track data.
Wind display will be removed if
GPS, TAS or OAT fails.
will
not
Miscellaneous Data Area
be
9-1
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