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Nav: vor navigation mode – roll servo, Nav: localizer tracking mode – roll servo, Nav: gps steering mode – roll servo – Dynon Avionics EFIS-D10A Pilots Users Guide User Manual

Page 67

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Autopilot Operation

EFIS-D10A Pilot’s User Guide

7-7

M

igation information. The AP’s goal in the roll axis is to

reads

AT:LON status. NAV/VOR mode

mode requires a working, calibrated compass and uses no references other than the compass and

th

HDG mode if the VOR indicates OFF, as when

ter (not pegged at either end of the scale) and the airplane is on a

N

pass and uses no references other than the compass and

ge’s

NAVSRC and is outputting ARINC roll steering commands. NAV/GPSS mode is indicated by the annunciation 'GST' in
the AP LAT:LON status. Note that GPSS is always used when the GPS provides roll steering commands.

ode, it takes its instruction from the GPS unit’s horizontal nav

center the CDI, flying you to the active waypoint on the desired course.

NAV: VOR NAVIGATION MODE – ROLL SERVO

NAV/VOR mode is available whenever a NAV radio source is selected as the HSI page’s NAVSRC and the CDI
TO or FROM. NAV/VOR mode is indicated by the annunciation “VOR” in the AP L
intercepts from any position relative to the station and flies the radial specified on the OBS. It may not be able to
complete an intercept within 10 miles if the aircraft is far from the desired course.

Note that NAV/VOR

e NAV radio. (GPS is not required.) NAV/VOR reverts to and stays in

crossing the station.

NAV: LOCALIZER TRACKING MODE – ROLL SERVO

NAV/LOC mode is available whenever a LOC source is selected as the HSI’s NAVSRC and is valid. NAV/LOC mode
must be engaged only when the CDI needle is near cen
heading near that of the runway. Runway heading for the ILS must be set via the OBS. NAV/LOC mode is indicated by
the annunciation “LOC” in the AP LAT:LON status.

ote that NAV/LOC mode requires a working, calibrated com

the NAV radio (GPS is not required). NAV/VOR reverts to HDG mode if the localizer signal becomes invalid.

NAV: GPS STEERING MODE – ROLL SERVO

The AP follows GPS Steering/ARINC roll commands from GPSs which produce them (such as the Garmin 430). An
ARINC connection via an HS34 is required. This mode is available when the GPS is selected as the HSI pa