Garmin G1000H Marine Radio User Manual


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190-01255-00 Rev. B
Garmin G1000H
™
Pilot’s Guide for the Bell 407GX
65
FLIGHT INSTRUMENTS
Figure 2-29 Automatic CDI Scaling
2.0 nm
Enroute
(Oceanic if >200 nm
from nearest airport)
0.3 nm
Missed
Approach
1.0 nm
Approach
1.0 nm
Terminal
1.0 nm
Terminal
0.3 nm
Departure
CDI Full-scale Deflection
Refer to accompanying
approach CDI scaling figures
•Onceadepartureprocedureisactivated,theCDIisscaledfordeparture(0.3nm).
•ThesystemswitchesfromdeparturetoterminalCDIscaling(1.0nm)underthefollowingconditions:
- The next leg in the procedure is not aligned with the departure runway
-
ThenextleginthedepartureprocedureisnotCA,CD,CF,CI,CR,DF,FA,FC,FD,FM,IF,orTF(see
Glossary for leg type definitions)
- AfteranyleginthedepartureprocedurethatisnotCAorFA
•At30nmfromthedepartureairporttheenroute phase of flight is automatically entered and CDI scaling
changesto2.0nmoveradistanceof1.0nm,exceptunderthefollowingconditions:
- Whennavigatingwithanactivedepartureprocedure,theightphaseandCDIscaledoesnotchange
untiltheaircraftarrivesatthelastdeparturewaypoint(ifmorethan30nmfromthedepartureairport)or
the leg after the last departure waypoint has been activated or a direct-to waypoint is activated.
•Ifaftercompletingthedepartureprocedurethenearestairportismorethan200nmawayfromtheaircraft
and the approach procedure has not yet commenced, the CDI is scaled for oceanicight(2.0nm).
•Within31nmofthedestinationairport(terminalarea),theCDIscalegraduallyrampsdownfrom2.0nm
to1.0nmoveradistanceof1.0nm,exceptunderthefollowingconditions:
- Whennavigatingwithanactivearrivalroute,theightphaseandCDIscaledoesnotchangeuntilthe
aircraftarrivesattherstwaypointinthearriveroute(ifwithin31nmfromthedestinationairport).
•Duringapproach,theCDIscalerampsdownevenfurther(seeFigures2-30and2-31).Thistransition
normallyoccurs within2.0nmof thenalapproachx(FAF). TheCDI switchestoapproachscaling
automaticallyoncetheapproachprocedureisactivatedorifVector-to-Final(VTF)isselected.
- IftheactivewaypointistheFAF,thegroundtrackandthebearingtotheFAFmustbewithin45°ofthe
final approach segment course.
- If the active waypoint is part of the missed approach procedure, the active leg and preceding missed
approach legs must be aligned with the final approach segment course and the aircraft must not have
passed the turn initiation point.
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