Sandia Aerospace STX 165 Installation Manual - Manual (Page 22)

3.11 Continued Airworthiness
3.11.1 STX 165 Panel Mounted unit
The STX 165’s built-in encoder requires calibration every 24 months per FAR 91.411. All other
maintenance of the STX 165 is on condition only.
3.11.2 STX 165R Remote
Continued Airworthiness of the STX 165R Remote transponder is on condition only.
3.10.7 DEFAULT VFR CODE
The factory default VFR code is set to 1200, the normal US VFR code. The pilot can change the
VFR code to the one used in his local area.
1. Rotate the Data knob to select DEFAULT VFR
2. Press the Enter pushbutton. The brackets will extinguish and the fi rst digit in the squawk code
will blink, indicating it is ready for programming.
3. Rotate the Data knob to select the desired digit.
4. Rotate the Select knob clockwise and the second digit will blink showing that it can now be pro-
grammed.
5. Continue 3 and 4 above until all digits are programmed to the desired squawk code.
6. Press the Enter pushbutton.
3.10.8 Exit User Set Up Mode
To exit the user set up mode, Press the Mode pushbutton once.
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