Pilot's Guide

Garmin G1000 Pilot’s Guide for the Beechcraft C90A/GT/GTi 190-00663-03 Rev. A256
FLIGHT MANAGEMENT
Approach Type
(as shown on HSI)
Description
LNAV/VNAV or
LNAV Minima
Available?
If SBAS unavailable prior to 1 minute to FAF,
approach switches to:
LNAV
GPS approach using published
LNAV minima
LNAV N/A
LNAV+V
GPS approach using published
LNAV minima. Advisory
vertical guidance is provided
LNAV LNAV+V (Baro VNAV)
L/VNAV
GPS approach using published
LNAV/VNAV minima
LNAV/VNAV LNAV/VNAV (Baro VNAV)
LNAV LNAV
Neither Approach Aborted
LP
(available only if
SBAS available)
GPS approach using published
LP minima
LNAV LNAV
No LNAV Approach Aborted
LPV
(available only if
SBAS available)
GPS approach using published
LPV minima
LNAV/VNAV LNAV/VNAV (Baro VNAV)
LNAV LNAV
Neither Approach Aborted
Approach Type
- LNAV, LNAV+V, L/VNAV, LP, LPV
Table 5-9 Approach Types
LP Approach Downgrade: If SBAS becomes unavailable prior to one minute to the FAF on an LP
approach, LP will be shown in yellow to indicate that a downgrade is imminent. At one minute to the FAF,
the LP approach will downgrade to an LNAV approach (magenta LNAV replacing the yellow LP), the CDI
will be removed, and a system message will be generated. The CDI will reappear when the system message is
acknowledged. If SBAS becomes unavailable after one minute to the FAF, the LP approach will abort.
LPV Approach Downgrade: If SBAS becomes unavailable prior to one minute to the FAF on an LPV
approach, LPV will be shown in yellow to indicate that a downgrade is imminent. At one minute to the FAF,
the LPV approach will downgrade, based upon the available minima, to either LNAV/VNAV (Baro VNAV) or
LNAV:
1) LNAV/VNAV (Baro VNAV): L/VNAV is initially shown in yellow, a system message will be generated,
and the VDI will show No GP or No GS. When the system message is acknowledged, L/VNAV will change
to magenta, and the VDI will change to a magenta Baro VNAV symbol (pentagon); or
2) LNAV: LNAV is shown in magenta, the VDI will show No GP or No GS, and a system message will be
generated. If SBAS becomes unavailable after one minute to the FAF, the LPV approach will immediately
downgrade to an LNAV approach, with no system message generated.