Pilot's Guide

Garmin G1000 Pilot’s Guide for the Hawker Beechcraft C90A/GT/GTi
190-00663-02 Rev. B68
FLIGHT INSTRUMENTS
COURSE DEVIATION INDICATOR (CDI)
NOTE : If a heading change of greater than 105˚ with respect to the course is made, the CDI on the Arc HSI
switches to the opposite side of the deviation scale and displays reverse sensing.
The Course Deviation Indicator (CDI) moves left or right from the course pointer along a lateral deviation
scale to display aircraft position relative to the course. If the course deviation data is not valid, the CDI is not
displayed.
Figure 2-25 Course Deviation Indicator
360º HSI
Scale
Crosstrack
Error
Flight
Phase
CDI
Navigation
Source
Arc HSI
CDI
Navigation
Source
CDI Scale
Flight
Phase
Crosstrack
Error
TheCDIcandisplaytwosourcesofnavigation:GPSorNAV(VOR,localizer).Colorindicatesthecurrent
navigationsource:magenta(forGPS)orgreen(forVORandLOC);theSelectedCoursereadoutalsofollows
these color indications. When coupled to GPS, the full scale limits for the CDI are defined by a GPS-derived
distance.WhencoupledtoaVORorlocalizer(LOC),theCDIhasthesameangularlimitsasamechanicalCDI.
IftheCDIexceedsthemaximumdeviationonthescale(twodots)whilecoupledtoGPS,thecrosstrackerror
(XTK)isdisplayedbelowthewhiteaircraftsymbol.
Figure 2-26 Navigation Sources
Navigation
Source Selected
on Both PFDs