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FDL-978 ADS-B Equipment 
Pilot Guide/User Manual 

 

 

 

2-4 

FFS Copyright © 2015 All rights reserved.

 

 

2.3  CODE Knob 

The 

CODE

 knob is used to set Squawk Codes and the Call Sign/Flight ID. Press the 

FN

 button 

until either the Squawk Code or Call Sign/Flight ID is highlighted at the top of the display. 
Turning the 

CODE

 knob will highlight the first digit on the display, then the digit can be modified 

as required by rotating the 

CODE

 knob. Press the 

ENT

 button to advance to the next digit and 

repeat until the Flight ID entry is complete. When the 

ENT

 button is pressed on the last digit, 

the new Squawk Code or Call Sign/Flight ID will replace the previous value. If the code entry is 
not completed within 7 seconds the changes are ignored and the previous code is restored. 

 

Figure 4. CODE Knob 

Table 2. Common VFR Squawk Codes 

1200   VFR code in the USA 

7500   Hijack Code 

7600   Loss of communications  

7700   Emergency Code  

The Call Sign/Flight ID should correspond to the Aircraft Identification entered on the flight plan. 
The aircraft registration should be used as the Call Sign/Flight ID unless a company designator 
and flight number is available. Use only letters and digits. If the Call Sign/Flight ID is less than 
eight characters long entering a blank character will end new entry. 

2.4  External Control and Reverse Video 

The TC978 provides control to the FDL-978 ADS-B equipment or the FDL-978 system can be 
configured for external control. External control inputs, such as Squawk Codes, Call Sign/Flight 
ID, and mode control (IDENT, Altitude Inhibit, transmit Standby), are needed by the FDL-978 
ADS-B equipment. If an external controller is configured and functional with the TC978 installed 
the TC978 displays status, but locks out user control inputs. Mode control is always provided by 
the external controller, so the position of the Mode Selection Knob only serves to turn on power 
to the ADS-B system. When in external control mode the TC978 will display the Squawk Code 
and/or Call Sign/Flight ID in reverse video, as shown below. 

 

 

Summary of Contents for ADS-B FDL-978 Series

Page 1: ...ly and remains the property of FreeFlight Systems It may not be reproduced in whole or in part without written consent of FreeFlight Systems and must not be disclosed to persons not having need of suc...

Page 2: ......

Page 3: ...anual Publication Number 87351 Revision B June 25 2015 NO PART OF THIS MANUAL MAY BE REPRODUCED IN ANY FORM OR BY ANY MEANS OR USED TO MAKE A DERIVATIVE WORK SUCH AS TRANSLATION TRANSFORMATION OR ADAP...

Page 4: ...updated materials regarding your products For Product Support Repair or Sales please contact us directly or an authorized FreeFlight Systems Dealer Product Support Department Phone 1 254 662 0000 ext...

Page 5: ...and Change pages are Revision A June 13 2013 Revision B June 25 2015 Change Description Page No Date Added description of external control feature and reverse video displayed on the TC978 Controller 2...

Page 6: ...FDL 978 ADS B Equipment Pilot Guide User Manual d FFS Copyright 2015 All rights reserved This page intentionally left blank...

Page 7: ...2 6 2 7 No Remote Link 2 8 2 8 Fault Annunciation 2 8 3 MISCELLANEOUS 3 1 3 1 Anonymous Mode 3 1 3 2 ADS B Annunciator 3 1 APPENDIX A ACRONYMS AND ABBREVIATIONS A 1 APPENDIX B LIMITED WARRANTY B 1 Li...

Page 8: ...FDL 978 ADS B Equipment Pilot Guide User Manual ii FFS Copyright 2015 All rights reserved This page intentionally left blank...

Page 9: ...the Federal Aviation Administration FAA mandate for ADS B Out installation on every aircraft operating in U S airspace by 2020 14 CFR 91 225 AC 90 114 while providing a solution for ADS B In applicati...

Page 10: ...FDL 978 ADS B Equipment Pilot Guide User Manual 1 2 This page intentionally left blank...

Page 11: ...al Flight Rules button FN button Function CODE knob ENT button Enter Mode Selection knob IDT button Ident Figure 1 TC978 Components 2 1 Display The wave symbol under the aircraft image traveling upwar...

Page 12: ...ransceiver equipment Squawk Code Call Sign Flight ID Reported pressure altitude in hundreds of feet Figure 2 also shows the FDL 978 ADS B Transceiver equipment powered on in Airborne Transmission mode...

Page 13: ...ith pressure altitude reported in transmitted messages applies to both ALT positions The FDL 978 equipment automatically switches between Airborne and Ground Mode In Airborne Mode ALT is displayed bel...

Page 14: ...e Call Sign Flight ID should correspond to the Aircraft Identification entered on the flight plan The aircraft registration should be used as the Call Sign Flight ID unless a company designator and fl...

Page 15: ...the FN button provides access to changing the Call Sign Flight ID You may either directly rotate the CODE knob or press the ENT button and the first character of the Call Sign Flight ID will be highli...

Page 16: ...the main Squawk Code view VFR Pressing the VFR button sets the ADS B to the pre programmed Squawk Code or VFR Call Sign Flight ID Pressing the VFR button again restores the previous Squawk Code or Cal...

Page 17: ...failure Tx Power Low Transceiver power too low Tx PSU High Transceiver power supply voltage too high Tx PSU Low Transceiver power supply voltage too low Squitter Fail Transceiver modulation fault Rem...

Page 18: ...FN button again to exit this mode and return to normal operation Warning Troubleshooting messages are described in Section 3 2 7 No Remote Link If the FDL 978 ADS B equipment loses communication with...

Page 19: ...ot requested The FDL 978 equipment defaults to the registered aircraft ICAO address and call sign when initially powered on Anonymous Mode will not be enabled within the first 90 seconds after the FDL...

Page 20: ...FDL 978 ADS B Equipment Pilot Guide User Manual 3 2 FFS Copyright 2015 All rights reserved This page intentionally left blank...

Page 21: ...st ASSAP Airborne Surveillance Separation Assurance Processing ATC Air Traffic Control FAA Federal Aviation Administration FFS FreeFlight Systems GPS Global Positioning System IFR Instrument Flight Ru...

Page 22: ...FDL 978 ADS B Equipment Pilot Guide User Manual A 2 FFS Copyright 2015 All rights reserved This page intentionally left blank...

Page 23: ...IMS THE SAME FREEFLIGHT MAKES NO EXPRESS OR IMPLIED WARRANTY WITH RESPECT TO THE DESIGN ADEQUACY ACCURACY RELIABILITY SAFETY OR CONFORMANCE WITH GOVERNMENT STANDARDS OR REGULATION OF ANY FLIGHT PROCED...

Page 24: ...FDL 978 ADS B Equipment Pilot Guide User Manual B 2 FFS Copyright 2015 All rights reserved This page intentionally left blank...

Page 25: ......

Page 26: ...erstate 35 South Waco Texas 76706 3756 USA US 800 487 4662 International 1 254 662 0000 Made in USA For additional product information and specifications please visit our website at www freeflightsyst...

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