GPS TRACKING AND GPS APPROACH
1. Ensure the GPS satellite signal and RAIM are available.
2. Ensure the CDI is set to GPS on the G1000.
3. Select the desired course on the HSI and establish a desired intercept
heading.
4. Press the NAV button on the autopilot computer twice. The
NAV and
GPSS mode annunciators will illuminate.
5. Use the HDG mode to accomplish procedure turns and holds. Reengage
GPSS to complete the approach when exiting a hold or procedure turn.
NOTE: During the intercept sequence, the autopilot operates at maximum
gain and sensitivity (130% of standard rate turn). When the selected
course is intercepted and the course deviation needle is centered, the
autopilot will transition into course tracking mode. The system will remain
at maximum sensitivity for approximately 15 seconds while the wind
correction angle is established. The maximum turn rate is then reduced
to 45% standard rate. Approximately 60 seconds later, the maximum turn
rate is reduced to 15% standard rate.
CAUTION: If HDG mode is not used to accomplish the procedure turn
or hold, and the autopilot is left in GPSS mode, it will intercept the inbound
holding leg course on the CDI and continue to y that course without
holding as published.
NOTE: If the course needle is at full-scale deviation, the autopilot will
establish the airplane on a heading for a 45° intercept with the selected
course. As the airplane approaches the course, the autopilot will smoothly
shallow the intercept angle. The pilot may select an intercept angle other
than the standard 45° by setting the desired intercept heading with the
HDG bug, pressing and holding HDG on the autopilot computer, and then
pressing NAV twice also on the autopilot computer (
HDG, NAV and GPSS
will be displayed). When the on-course intercept turn begins, the HDG
mode will disengage and the annunciator will disappear.
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