Cockpit Reference Guide

Cockpit Reference Guide for the Prodigy
®
Flight Deck 300
190-00761-02 Rev. A
100
Abnormal Operation
Flight
InstrumentsEAS
Nav/Com/
XPDR/AudioAFCSGPS Nav
Flight
PlanningProcedures
Hazard
Avoidance
Additional
Features
Abnormal
Operation
Annun/
AlertsAppendixIndex
prominently displayed, also in yellow, on the HSI slightly above and to the right of the
aircraftsymbolontheCDIasshowninthefollowinggure.Also,theCDIdeviation
bar is removed from the display. Lastly, but at the same time, a ‘GPS NAV LOST’ alert
messageappearsonthePFD.
Normal navigation using GPS/SBAS source data resumes automatically once a valid
GPS solution is restored.
It is important to note that estimated navigation data supplied by the system in
DRModemaybecomeincreasinglyunreliableandmustnotbeusedasasolemeans
of navigation. If, while in DR Mode, airspeed and/or heading data is also lost or
notavailable,theDRfunctionmaynotbecapableofestimatingyourpositionand,
consequently, the system may display a path that is different than the actual movement
of the aircraft. Estimated position information displayed by the system through
DRwhilethereisnoheadingand/orairspeeddataavailableshouldnotbeusedfor
navigation.
DRModeisinherentlylessaccuratethanthestandardGPS/SBAS Mode due to the
lack of satellite measurements needed to determine a position. Changes in wind speed
and/or wind direction compounds the relative inaccuracy of DRMode.Becauseofthis
degraded accuracy, the crew must maintain position awareness using other navigation
equipment until GPS-derived position data is restored.
Dead Reckoning Indications
Symbolic Aircraft
(Map pages and Inset Map)
CDI ‘DR’ Indication on PFD