Pilot's Operating Handbook
Section 7
Description
Edition 1 - January 15, 2018
Rev. 5
Page 7.14.13
Under certain circumstances when the GNSS integrity requirement is not met, the
approach may be aborted. This is annunciated through ABORT APR , while the
service level annunciation is no longer displayed on the HSI.
If SBAS becomes unavailable on an RNAV LNAV/VNAV approach, L/VNAV is
shown in yellow, the system switches to LNAV/VNAV (Baro-VNAV) service level and
APR DWNGRADE will be generated (the VDI will be flagged NO GP until
APR DWNGRADE has been acknowledged).
If APR DWNGRADE is acknowledged, the L/VNAV is shown in magenta.
If APR DWNGRADE is not acknowledged, the system will downgrade to LNAV
service level, ( LNAV shown in magenta), the VDI will remain flagged ‘NO GP’, and
no additional downgrade system message will be generated.
If SBAS becomes unavailable on an RNAV LPV approach, LPV will be shown in
yellow, but the CDI and VDI will continue to be shown. At one minute to the FAF,
APR DWNGRADE will be generated.
The VDI will be flagged NO GP. Depending on the available lines of minima for the
approach, the system will switch to either LNAV/VNAV or LNAV service level.
Advisory visual approaches
The GIFD will provide advisory visual approaches to many runways in the aviation
database. Lateral guidance for the visual approach is aligned with the runway bearing.
The system also generates vertical guidance from the runway threshold at a GIFD
defined glide path (usually 3°, refer to the GARMIN Pilot's Guide for further
information) allowing coupling of the autopilot to the appropriate minimums.
The pilot interface for visual approaches is an extension of the normal approach
selection method. At the end of the list of instrument approaches, there will be a set of
visual approaches added. Nominally, there will be a visual approach listed for each
runway end. The approaches will be labeled with the name VISUAL and the runway
number.
To Next Page
Loading...
