5-23
Navigation
WAAS APPROACHES
LPV (RNAV) approaches are the preferred approach for the IFD,
if available. The IFD is configured at the time of installation for
whether it is a WAAS-capable unit or a non-WAAS-capable unit.
If non-WAAS, the following procedures do not apply.
When GPS has been selected as the nav source, and one of the
RNAV/GPS approach types with vertical guidance (LPV, L/VNAV,
LNAV+V, LP+V) is selected in the FMS, the IFD will transmit
horizontal and vertical deviation for use by any integrated external
display device.
There are several types of WAAS approaches. The FMS will
automatically select the best available approach based on current
GPS integrity and will indicate the selection in the Nav Mode
datablock field.
TIPS AND TECHNIQUES
Nav Mode Datablock
The Nav Mode datablock as defined in the
Datablock definitions table in Section 4 of this
manual will indicate the current navigation mode
(e.g. OCN, ENRT, TERM, APPR, LPV,
LNAV/VNAV, LNAV+V, LNAV, etc). It is a default
datablock and is an excellent means to know GPS
integrity and mode.
The pilot must monitor the IFD throughout the approach and use
charted minimums appropriate to the approach type. If an
approach type is not indicated by the time the final approach fix
(FAF) is reached,
do not descend
– the conditions required to fly
the approach have not been met and you must fly the missed
approach procedure.
Содержание IFD540
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