ILS INTERCEPT AND TRACKING
1. Begin with a reliable ILS signal selected on NAV 1 or NAV 2 of the G1000.
2. Select LOC 1 or 2 as appropriate using the G1000 CDI softkey.
3. Verify the inbound course is selected on the HSI
4. Establish an intercept heading using the G1000 heading bug and the HDG
mode on the autopilot computer.
5. Establish an intercept altitude using the ALT mode of the autopilot.
6. Using the autopilot computer, press and hold HDG and then press APR
(
HDG, NAV, APR, and ALT annunciated).
7. Once the aircraft is within 50% needle deection of the localizer centerline
and more than 10% needle deection below the glideslope the GS
(glideslope) mode will automatically arm (
GS).
8. The GS annunciation will ash whenever the needle deection exceeds
50% or the glideslope signal is lost. If the glideslope signal is lost, the
FAIL annunciation will also be shown.
9. At the decision height or 300 feet AGL (whichever occurs rst), disengage
the autopilot to land or execute a missed approach.
NOTE: If the approach positions the aircraft slightly above the glideslope,
then manual engagement of the glideslope mode can be instantly achieved
by pressing the ALT button on the autopilot computer.
CAUTION: Manual engagement of the glideslope mode when the
aircraft is positioned above the GS centerline will cause a more aggressive
intercept toward the glideslope. Do not manually engage the glideslope
mode if the glideslope needle deection is greater than 10% above center.
NOTE: The armed glideslope mode can be subsequently disabled by
pressing the APR mode selector switch. The
GS annunciation will ash
to acknowledge this. To then re-arm the glideslope mode, press the
APR mode selector switch again. The
GS annunciation will immediately
extinguish, but reappear after one second.
NOTE: With the glideslope armed, once the aircraft reaches 5%
Glideslope Deviation Indication (GDI) needle deection below the
glideslope, the
ALT annunciation will extinguish to indicate engagement
of the glideslope mode and the Glideslope Mode annunciation will change
from white (armed) to green (active).