Garmin G1000 Pilot’s Guide for the Socata TBM 850
190-00709-00 Rev. A
2-20
FLIGHT INSTRUMENTS
Changing navigation sources:
1)
Press the
CDI
Softkey to change from GPS to VOR1 or LOC1. This places the light blue tuning box over the
NAV1 standby frequency in the upper left corner of the PFD.
2)
Press the
CDI
Softkey again to change from VOR1 or LOC1 to VOR2 or LOC2. This places the light blue tuning
box over the NAV2 standby frequency.
3)
Press the
CDI
Softkey a third time to return to GPS.
Figure 2-32 Selecting a Navigation Source
GPS
Selected
Pressing the
CDI
Softkey
Cycles through
Navigation Sources
NAV1 Selected for Tuning
LOC1
Selected
NAV2 Selected for Tuning
VOR2
Selected
The system automatically switches from GPS to LOC navigation source and changes the CDI scaling
accordingly when all of the following occur:
• A localizer or ILS approach has been loaded into the active flight plan
• The final approach fix (FAF) is the active leg, the FAF is less than 15 nm away, and the aircraft is moving
toward the FAF
• A valid localizer frequency has been tuned
• The GPS CDI deviation is less than 1.2 times full-scale deflection
GPS steering guidance is still provided after the CDI automatically switches to LOC until LOC capture, up
to the Final Approach Fix (FAF) for an ILS approach, or until GPS information becomes invalid. Activating a
Vector-to-Final (see the Flight Management Section) also causes the CDI to switch to LOC navigation source;
GPS steering guidance is not provided after this switch.
