Viewing GPS receiver status information:
1) Use the large FMS knob on the MFD to select the Auxiliary Page Group.
2) Use the small FMS knob to select GPS Status Page.
Enabling/disabling SBAS on G1000:
SBAS can be enabled or disabled manually on the GPS Status Page.
1) Select the AUX-GPS Status Page.
2) Press the SBAS softkey.
3) Press the FMS Knob, and turn the large FMS Knob to highlight ‘EGNOS’, ‘MSAS’ or ‘WAAS’.
4) Press the ENT Key to disable SBAS. Press the ENT Key again to enable SBAS.
RAIM prediction
RAIM (Receiver Autonomous Integrity Monitoring) is a GPS receiver function that performs a
consistency check on all tracked satellites. May be times when RAIM is not available. RAIM
prediction must be initiated manually if there is concern over SBAS coverage at the destination
or some other reason that compromises navigation precision. If RAIM is not predicted to be
available for the final approach course, the approach does not become active. If RAIM is not
available when crossing the FAF, the missed approach procedure must be flown.
Predicting RAIM availability at a selected waypoint:
1) Select the AUX-GPS Status Page.
2) Press the FMS Knob. The RAIM Prediction ‘WAYPOINT’ field is highlighted.
3) Turn the small FMS Knob to display the Waypoint Information Window. (Turning it
clockwise displays a blank Waypoint Information Window, turning it counter-clockwise
displays the Waypoint Information Window with a waypoint selection submenu allowing
selection of active flight plan, nearest, recent, user, or airway waypoints).
4) Enter the identifier, facility, or city name of the departure waypoint; or select a waypoint
from the submenu of
waypoints and press the ENT Key to accept the waypoint entry.
5) Turn the FMS Knobs to enter an arrival time and press the ENT Key.
6) Turn the FMS Knobs to enter an arrival date and press the ENT Key.
7) Press the ENT Key with ‘COMPUTE RAIM?’ highlighted to begin the computation.
Predicting RAIM availability at the aircraft present position:
1) Select the AUX-GPS Status Page.
2) Press the FMS Knob. The RAIM Prediction ‘WAYPOINT’ field is highlighted.
3) Press the MENU Key, highlight ‘Set WPT to Present Position’, and press the ENT Key.
4) Press the ENT Key to accept the waypoint entry.
5) Turn the FMS Knobs to enter an arrival time and press the ENT Key.
6) Turn the FMS Knobs to enter an arrival date and press the ENT Key.
7) Press the ENT Key with ‘COMPUTE RAIM?’ highlighted to begin the computation.
Status of the RAIM computation for the selected waypoint, time, and date is displayed at the
bottom of the RAIM PREDICTION Box as follows:
• ‘COMPUTE RAIM?’ - RAIM has not been computed.
• ‘COMPUTING AVAILABILITY’ - RAIM calculation is in progress.
• ‘RAIM AVAILABLE’ - RAIM is predicted to be available.
• ‘RAIM NOT AVAILABLE’ - RAIM is predicted to be unavailable.