Garmin GPS 400W,GNC 420W Pilot's Manual & Reference page 118

5 - PROCEDURES
LPV Approach
page. With "Load?" highlighted press ENT to
load the approach into the flight plan.
4. After the approach is loaded into the flight
plan, you can view the approach waypoints.
5. Press the PROC key to display the Procedures
page. With "Activate?" highlighted press ENT
to activate the approach.
Flying the LPV Approach
1. Within 31 nautical miles of KSLE, the 400W
Series unit switches from en route mode to
terminal mode and the CDI scale transitions
from 2.0 to 1.0 nautical miles, full scale deflec-
tion.
2. As you approach the IAF (GLORR), a waypoint
message ("LT TO 314° x S") appears on the
bottom of the screen.
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3. As the distance (DIST) to the IAF approaches
zero, the message is replaced by a turn advi-
sory that counts down 10 seconds prior to the
turn.
4. As you approach the FAF (LOTKE), the 400W
Series unit will begin to automatically rescale
in an angular fashion. This will allow the LPV
approach to be flown in an identical fashion
to a standard ILS. At 2.0 NM from the FAF, CDI
scaling is tightened from 1.0 to the angular full
scale deflection (typically the angular full-scale
deflection is 2.0°, but will be as defined for the
approach.
5. Sixty seconds prior to reaching the FAF (LOTKE),
the unit will check the required HorizontalAlarm
Limit (HAL) and Vertical Alarm Limit (VAL) to
ensure the GPS position integrity is within limits
to complete the LPV precision approach. In the
event the HAL or VAL limits are exceeded, the
approach will be downgraded to a non-preci-
sion approach indicated by "LNAV" on the
moving map, a message that the approach is
downgraded ("Approach downgraded - Use
LNAV minima"), and the glideslope indicator
will be flagged.You may continue the approach
using LNAV non-precision minimums if there
are LNAV minimums for this approach. In the
rare event the GPS integrity cannot meet the
non-precision HAL limits, the unit will send a
message to the pilot to abort the approach
("Abort Approach - Loss of Navigation"). The