CHAPTER 4
REFERENCE GUIDE
EFD1000H PFD Pilot’s Guide
Page 4-25
091-00012-001 REV C
4.4. Navigation Display
The Horizontal Situation Indicator (HSI) on the Navigation Display of the PFD, combines
a Direction Indicator with a Course Deviation Indicator (CDI) (
Figure 4-39
).
The Direction Indicator comprises a compass, numerical direction indication, heading
bug, Ground Track Marker (when GPS ground track information is available), rate of turn
indicator, and aircraft ownship symbol. The CDI is comprises a selected course pointer,
Deviation Scale and indicator, TO/FROM indicators, and selected navigation source label
and information block.
CDI Source Info Block
Aircraft Ownship Symbol
Magnetic Heading
Heading Bug
Rate of Turn Indicator
Selected CDI Navigation Source
Selected Heading Field
Course Deviation Scale
Ground Track Marker
Compass Scale
Course Pointer
Course Deviation Indicator
TO/FROM Indicator
Figure 4-39
Horizontal Situation Indicator
NOTE
The size, shape and location of the Course Pointer,
Deviation Scale, and Deviation Indicator depend on
the Compass Mode selected..
