Cockpit Reference Guide for the Cirrus SR2x with Perspective Touch+ by Garmin
190-02954-01 Rev. A
186
Flight
InstrumentsEAS
Audio and
CNS
Flight
Management
Hazard
AvoidanceAFCS
Additional
Features
Abnormal
OperationAnnun/AlertsAppendixIndex
Abnormal Operation
Annunciation Location Description
GPS LOI Left of HSI
Loss of Integrity Monitoring – GPS integrity is insufficient for the
current phase of flight
UNABLE RNP
Left of HSI
and System
Messages
The estimated GPS position error exceeds RNP limits. Check GPS
signal.
GPS
INTEG
OK
Left of HSI
GPS integrity has been restored to within normal limits
(annunciation displayed for 5 seconds)
DR
Lower left of
aircraft symbol
Dead Reckoning – System is using projected position rather than
GPS position to compute navigation data and sequence active
flight plan waypoints
Abnormal GPS Conditions Annunciated on HSI
Abnormal GPS Condition Annunciations
In Dead Reckoning Mode the following items on the PFD are then shown in amber:
– CDI (when GPS is the selected navigation source; the CDI is removed after 20 minutes).
– Flight Phase.
– Current Track Bug.
– Wind Data.
– Distances to bearing sources displayed in the NAV/DME Information Bar.
– GPS bearing pointers.
These items should be verified when operating in Dead Reckoning Mode and they become
increasingly inaccurate over time.
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