Garmin Appliance Data User's Guide download pdf (Page 120)

5 - PROCEDURES

110

190-00356-00 Rev J

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 NM 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 NM, full scale deﬂec-

tion.

2. As you approach the IAF (GLORR), a waypoint mes-

sage (“LT TO 314° x S”) appears on the bottom of the

screen.

3. As the distance (DIST) to the IAF approaches zero, the

message is replaced by a turn advisory 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 Horizontal Alarm 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-precision 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 unit will

revert to terminal limits to support navigation to the

missed approach when the message is acknowledged.

After the aircraft has passed the FAF, a loss

of WAAS integrity will cause the approach to

abort instead of downgrade.

6. Capture the glideslope as you would an ILS

glideslope.

7. As you cross LOTKE, the destination sequences to the

MAP (“RW31”, the runway threshold). With the needle

on the external CDI (or HSI) centered, ﬂy toward the

MAP, observing the altitude minimums dictated by the

approach plate.

LPV Approach

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Garmin Appliance Data User's Guide Page 120

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