1.1 INTRODUCTION .........................................................................................................................................1-1

1.2 EQUIPMENT DESCRIPTION......................................................................................................................1-1

1.3 TECHNICAL SPECIFICATIONS.................................................................................................................1-2

1.4 TSO LIMITATIONS .....................................................................................................................................1-7

1.5 LICENSE REQUIREMENTS .......................................................................................................................1-7

1.6 CERTIFICATION .........................................................................................................................................1-7

1.7 FAULT DETECTION AND EXCLUSION (FDE) ......................................................................................1-7

1.8 LIMITED WARRANTY ...............................................................................................................................1-8

2. INSTALLATION

2.1 INTRODUCTION .........................................................................................................................................2-1

2.2 ANTENNA CONSIDERATIONS .................................................................................................................2-1

2.3 RACK CONSIDERATIONS .........................................................................................................................2-3

2.4 CABLING AND WIRING ............................................................................................................................2-3

2.5 COOLING AIR..............................................................................................................................................2-3

2.6 MINIMUM INSTALLATION REQUIREMENTS .......................................................................................2-3

3. INSTALLATION PROCEDURE

3.1 UNIT AND ACCESSORIES .........................................................................................................................3-1

3.2 DATA BASE OPTIONS................................................................................................................................3-4

3.3 MISCELLANEOUS OPTIONS.....................................................................................................................3-4

3.4 INSTALLATION ACCESSORIES REQUIRED BUT NOT PROVIDED ...................................................3-4

3.5 ANTENNA INSTALLATION ......................................................................................................................3-4

3.6 CABLE INSTALLATION.............................................................................................................................3-5

3.7 RACK INSTALLATION...............................................................................................................................3-7

3.8 400 SERIES UNIT INSERTION AND REMOVAL.....................................................................................3-7

3.9 COM ANTENNA INSTALLATION CHECK (GNC 420 AND GNS 430)..................................................3-7

4. SYSTEM INTERCONNECTS

4.1 PIN FUNCTION LIST...................................................................................................................................4-1

4.2 POWER, LIGHTING, AND ANTENNAS....................................................................................................4-5

4.3 ALTIMETER.................................................................................................................................................4-6

4.4 MAIN INDICATOR ......................................................................................................................................4-7

4.5 ANNUNCIATORS/SWITCHES ...................................................................................................................4-9

4.6 SERIAL DATA .............................................................................................................................................4-11

4.7 COM/VOR/ILS AUDIO (GNC 420 AND GNS 430 ONLY) ........................................................................4-14

4.8 VOR/ILS INDICATOR (GNS 430 ONLY)...................................................................................................4-16

4.9 RMI/OBI........................................................................................................................................................4-18

4.10 DME TUNING (GNS 430 ONLY) ..............................................................................................................4-19

5. POST INSTALLATION CONFIGURATION & CHECKOUT PROCEDURE

5.1 CONFIGURATION MODE OPERATIONS.................................................................................................5-1

5.2 INSTALLATION CONFIGURATION PAGES............................................................................................5-1

5.3 ADDITIONAL GROUND TESTS ................................................................................................................5-17

Appendix A. CERTIFICATION DOCUMENTS

A.1 CONTINUED AIRWORTHINESS ..............................................................................................................A-1

A.2 ENVIRONMENTAL QUALIFICATION FORM-GNS 430......................................................................A-3

A.3 ENVIRONMENTAL QUALIFICATION FORM-GNC 420 .....................................................................A-4

A.4 ENVIRONMENTAL QUALIFICATION FORM-GPS 400 ......................................................................A-5

A.5 ENVIRONMENTAL QUALIFICATION FORM-GA 56..........................................................................A-6

Appendix B. STC PERMISSION ................................................................................................................................B-1

Appendix C. 400 SERIES RS-232 AVIATION DATA FORMAT .............................................................................C-1

Appendix D. 400 SERIES RS-232 FUEL/AIR DATA INPUT FORMAT..................................................................D-1

Appendix E. 400 SERIES LRU INTERFACE OVERVIEW ......................................................................................E-1

Appendix F. DRAWINGS AND INTERCONNECTS ...............................................................................................F-1

Note: Throughout this document references made to GNS 430 and GNC 420 shall equally apply to

the GNS 430A and GNC 420A except where specifically noted.

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400 SERIES INSTALLATION MANUAL

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