Garmin GNC 420AW GPS Receiver User Manual


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5 - PROCEDURES
113
190-00356-00 Rev E
RNAV Approach Procedures
TheGNS400WSeriesallowsforyingLNAV,LNAV/VNAV,LNAV+V,LP,andLPVapproachesaccordingto
the published chart.
HSI
Annunciation
Description Minimums
L/VNAV Lateral Navigation/Vertical Navigation. RNAV non-precision approach with advisory vertical
guidance.
Published LNAV/VNAV
minimums.
LNAV Lateral Navigation. RNAV non-precision approach. Published LNAV minimums.
LNAV + V Lateral Navigation with Advisory Vertical Guidance. RNAV non-precision LNAV approach
with advisory vertical guidance. The glidepath is typically denoted by a light dashed line
on the vertical profile (Jeppeson only) with an associated glidepath angle (usually in the
3.00 degree range) and is provided to assist the pilot in maintaining a constant vertical
glidepath, similar to an ILS glideslope.
Published LNAV minimums.
LPV Localizer Performance with Vertical guidance (LPV) approach.
RNAV precision approach.
Published LPV minimums.
LP
LP indicates Localizer Performance with no vertical guidance. Published LP minimums.
NOTE: Minimums will be controlling, do not
descend below applicable minimum descent altitude or decision height until criteria of FAR 91.175 are met.
Points to Remember for All Approaches
• TheGNS400W-seriesunitisdesignedtocomple-
ment your printed approach plates and vastly
improve situational awareness throughout the
approach. However, you must always fly an approach
as it appears on the approach plate.
• Theactiveleg(ortheportionoftheapproachcur-
rently in use) is depicted in magenta on the Map
Page. As you fly the approach, the 400W-series
unit automatically sequences through each leg
of the approach unless “SUSP” appears above
the OBS key. “SUSP” indicates that automatic
sequencing of approach waypoints is suspended on
the current leg and normally appears at holding
patterns and upon crossing the missed approach
point (MAP).
• For rollsteering autopilots: roll steering is ter-
minated when approach mode is selected on the
autopilot and is available once the missed approach
is initiated.
•
IfVectors-to-Finalisactivatedwhileonthe“FROM”
side of the FAF, automatic waypoint sequencing is
suspended and the SUSP annunciation will appear.
Automatic waypoint sequencing will resume once
the aircraft is on the “TO” side of the FAF and within
full-scale deflection.
This is a new feature with the
400W-series.
• For allapproachesand departures,make sureto
recheck the runway, transition, and all waypoints.
RNAV Approach Procedures
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