30GTN 650: OTHER FEATURES AND CUSTOMIZATION
Use the DALT/TAS/Winds calculator
e GTN can calculate density altitude (DALT), true airspeed (TAS), and winds alo, based on sensor data (if
your GTN is connected to an external air data computer and a heading source) or information that you pro-
vide. For more information, see “14.6 DALT/TAS/Winds” in the GTN 625/635/650 Pilot’s Guide.
1. PRESS the
HOME
button on the upper right of the bezel.
2. On the Home page, TOUCH Utilities.
3. On the Utilities page, TOUCH DALT/TAS/Winds.
a. If your GTN is connected to the required external sensors, in the DALT/TAS/Winds window,
TOUCH Use Sensor Data.
b. If your GTN is not connected to the required external sensors, in the DALT/TAS/Winds window,
TOUCH each item that requires data and use the keypad to enter the appropriate information.
4. e GTN shows the calculated information below the data.
Check RAIM
e GTN is a WAAS-capable navigator, and checking RAIM is not required if you are operating within the
WAAS service area. Outside of WAAS coverage, you can verify that RAIM will be available for a trip.
1. To display the Utilities page, PRESS the
HOME
button in the upper-right corner of the bezel.
2. On the Home page, TOUCH Utilities.
3. On the Utilities page, TOUCH RAIM Prediction.
4. To specify the arrival waypoint, TOUCH Waypoint and use the keypad to enter a waypoint name.
5. To specify the arrival date and time, TOUCH Arrival Date and then Arrival Time to enter the details.
6. To compute RAIM, TOUCH Compute RAIM.
Set a generic timer to count up or down
You can set a generic timer and a trip timer, with various options. You can also set the criteria for the departure
time to track ight time.
1. PRESS the
HOME
button on the bezel.
2. On the Home page, TOUCH Utilities.
3. On the Utilities page, TOUCH Flight Timers.
4. To set a generic count-up or count-down timer, TOUCH Direction.
a. If you specied a count-down timer,
TOUCH Preset and use the keypad to en-
ter the duration of the timer.
b. To start the timer, TOUCH Start.
c. To stop a running timer, TOUCH Stop.
Set a Trip Timer
1. PRESS the
HOME
button on the bezel.
2. On the Home page, TOUCH the Utilities icon.
3. On the Utilities page, TOUCH the Flight Tim-
ers icon.
4. TOUCH Criteria to select either Power On or
In Air (groundspeed greater than 35 knots) as
the starting condition.
5. To reset a Trip Timer, TOUCH Reset Timer.
TIP
The requirements for non-precision approaches
specify significantly better satellite coverage than
other phases of flight. The GTN automatically mon-
itors RAIM during approach operations. If RAIM is
not available, the GTN warns you, and you must fly
a conventional approach. RAIM cannot predict the
WAAS availability. The FAA publishes NOTAMs if
approaches that require vertical guidance may not
be available. For more information about RAIM and
WAAS availability, see AIM 1−1−17 Global Posi-
tioning System (GPS) and AIM 1−1−18. Wide Area
Augmentation System (WAAS).
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