Garmin G1000 Pilot’s Guide for the Piper PA-32 Saratoga
190-02692-00 Rev. A
240
FLIGHT MANAGEMENT
SY
STEM
O
VER
VIEW
FLIGHT
INSTRUMENTS
EIS
AUDIO P
ANEL
& CNS
FLIGHT
MANA
GEMENT
HAZARD
AV
OID
ANCE
AFCS
ADDITIONAL FEA
TURES
APPENDICES
INDEX
NOTE:
Refer to the current, pertinent flight manual for additional information regarding crew responses for
loss of SBAS and approach downgrade procedures.
Approach
SBAS Becomes
Unavailable
Description
Action Required Downgrade
LNAV
Approach phase
not specified
SBAS not required.
The approach is continued.
None
N/A
LNAV+V
Prior to the FAF
HSI displays amber L/VNAV;
VDI displays NO GP. **
None
N/A
LNAV/
VNAV
At/after the FAF
HSI displays magenta LNAV;
VDI displays NO GP.
None
LNAV*
LP
More than 1 min
prior to the FAF
HSI displays amber LP
None
N/A
Within 1 min
prior to the FAF
HSI displays magenta LNAV;
CDI is removed. **
Acknowledge
message to redisplay
CDI with LNAV
LNAV*
At/after the FAF CDI is removed **
Abort
N/A
LP+V
More than 1 min
prior to the FAF
HSI displays amber LP+V;
VDI displays NO GP.
None
N/A
Within 1 min
prior to the FAF
HSI displays magenta LNAV;
CDI is removed.
VDI displays NO GP. **
Acknowledge
message to redisplay
CDI with LNAV
LNAV*
At/after the FAF
CDI is removed;
VDI displays NO GP. **
Abort
N/A
LPV
More than 1 min
prior to the FAF
HSI displays amber LPV
None
N/A
Within 1 min
prior to the FAF HSI displays magenta LNAV;
VDI displays NO GP.
None
LNAV*
At/after the FAF
* If there are no LNAV minimums available for the approach, abort.
** System message is generated.
Table 5-12 Approach Degradation Behavior
Loss of GPS
When GPS sensors are no longer being utilized for position fixing while on a GPS approach, the
approach must be aborted. When a loss of GPS occurs during a GPS approach, the HSI will no longer
display the CDI deviation bar, the approach indication will display an amber LNAV, and the system
message ABORT APR will be displayed. Once the pilot acknowledges the message, the HSI flight phase
will change and the CDI deviation bar will reappear. Reference the Abnormal Operations in later in this
section for more information on loss of GPS.
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