190-02692-00 Rev. A
Garmin G1000 Pilot’s Guide for the Piper PA-32 Saratoga
239
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
The system will allow the applicable level of service for the chosen approach using GPS navigation. See
the following table for approach service levels allowed by the system:
HSI Annunciation
Description
Example on HSI
LNAV
Approach to the published MDA
Approach Service Level
– LNAV, LNAV+V, L/VNAV, LP, LP+V, LPV
LP
LNAV+V
Approach with advisory vertical
guidance to the published MDA
LP+V
L/VNAV
Approach with approved vertical
guidance to the published DA
LPV
Table 5-10 Approach Service Levels
The system GPS receivers will use Satellite Based Augmentation (SBAS) when available. Some approaches
require the use of SBAS for lateral and/or vertical GPS navigation. For information on how lateral and
vertical guidance is depicted on the PFD, see the Flight Instruments Section.
Approach Service Level Lateral Navigation Source
Vertical Navigation
Source
LNAV
GPS
N/A
LNAV+V
GPS
GPS
(advisory only)
LNAV/VNAV
GPS
GPS*
LP
GPS*
N/A
LP+V
GPS*
GPS*
(advisory only)
LPV
GPS*
GPS*
* SBAS required
Table 5-11 Source of Lateral and Vertical Navigation per Approach Service Level
Loss of SBAS
Due to the high level of precision required by some approach service levels, losing SBAS may require
the pilot to acknowledge a downgrade of approach service level, or to abort the approach. See the
following table for approach degradation behavior:
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