IFD500 Series Pilot Guide
6-28 Navigation
LNAV+V (Lateral Navigation with Advisory Vertical Guidance)
An LNAV+V approach provides the same lateral navigation
as LNAV, but also presents an advisory glideslope deviation
for display on the external deviation indicator. Vertical
deviations are based on a glidepath angle that is published
with the approach. However, it is
the pilot’s responsibility to
ensure compliance with all published stepdown constraints.
This type of approach remains non-precision. The Nav
Mode datablock will display “LNAV+V” for the approach
type.
LNAV/VNAV (Lateral Navigation with Vertical Navigation)
An LNAV/VNAV approach provides lateral navigation, with
more accurate guidance than regular LNAV but easier to
follow indications than a localizer. The vertical navigation is
driven by GPS signals. LNAV/VNAV approaches are
operationally different from LNAV+V in that the glide path is
protected from obstructions but attention still must be
applied to step down fixes. Also, the minimum altitude
presented is a decision altitude/height (DA/DH)
– DA being
what is on the altimeter, and DH being the height of the DA
above the touchdown zone elevation. This is not a MDA,
thus, fly it just as though it were an ILS approach: follow the
glide slope all the way to the DA before initiating a missed
approach, if appropriate. The Nav Mode datablock will
display “L/VNAV” for the approach type.
LPV (Localizer Precision with Vertical Guidance)
An LPV approach provides lateral guidance that is
significantly more precise than LNAV, and equivalent to that
of a localizer. Vertical guidance is provided to minimums as
low as 200’ AGL above the touchdown zone. Lateral
tolerance starts out at 0.3 NM full-scale (slightly tighter than
a localizer at the FAF), transitioning to 350 feet either side at
the runway threshold. The steering remains linear all the
way without the difficult to follow swings of a VHF localizer.
The vertical guidance is precise and has a DA/DH (shown as
“DA(H)” on approach charts) rather than a MDA. The Nav
Mode datablock will display “LPV” for the approach type.
LP (Localizer Performance)
An LP approach has localizer performance but no vertical
guidance associated with them. Use the published “LP”
Summary of Contents for IFD510
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Page 140: ...IFD500 Series Pilot Guide 3 50 FMS Subsystem Weather Data on Info Tab Info Tab Nearby Navaids ...
Page 150: ...IFD500 Series Pilot Guide 3 60 FMS Subsystem User Waypoint Airfield Naming Example ...
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Page 180: ...IFD500 Series Pilot Guide 4 24 Map Subsystem ADS B Lightning Coverage Area Shadow ...
Page 252: ...IFD500 Series Pilot Guide 5 16 Aux Subsystem Trip Statistics Calculator ...
Page 460: ...IFD500 Series Pilot Guide 7 82 General Bluetooth pairing pairing code ...