Garmin GNC 420A Installation Manual
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Garmin GNC 420A Installation Manual

400 series
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400 SERIES

INSTALLATION MANUAL

GPS 400, GNC
420 (A), and GNS
430 (A)
TM
TM
GNC and GNS are trademarks of Garmin Ltd. or its subsidiaries
and may not be used without the express permission of Garmin.
(GNS 430 Shown)
190-00140-02, Revision Q
October 2005

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  • Page 1: Installation Manual

    INSTALLATION MANUAL GPS 400, GNC 420 (A), and GNS 430 (A) GNC and GNS are trademarks of Garmin Ltd. or its subsidiaries and may not be used without the express permission of Garmin. (GNS 430 Shown) 190-00140-02, Revision Q October 2005...
  • Page 2 Garmin. Garmin hereby grants permission to download a single copy of this manual and of any revision to this manual onto a hard drive or other electronic storage medium to be viewed and to print one copy of this manual or of any revision...
  • Page 3 This manual is written for software version 5.01, and is not suitable for earlier software versions. Information in this document is subject to change without notice. Visit the Garmin web site (www.garmin.com) for current updates and supplemental information concerning the operation of this and other Garmin products.

  • Page 4: Table Of Contents

    A.1 CONTINUED AIRWORTHINESS ........................A-1 A.2 ENVIRONMENTAL QUALIFICATION FORM—GNS 430 ................A-4 A.3 ENVIRONMENTAL QUALIFICATION FORM—GNC 420 ................A-5 A.4 ENVIRONMENTAL QUALIFICATION FORM—GPS 400 ................A-6 A.5 ENVIRONMENTAL QUALIFICATION FORM—GA 56..................A-7 Appendix B. STC PERMISSION ..........................B-1 Appendix C. 400 SERIES RS-232 AVIATION DATA FORMAT ................C-1 Appendix D.
  • Page 5 FIGURE F-5. GNS 430 MOUNTING RACK INSTALLATION ................F-11 FIGURE F-6. GNC 420 MOUNTING RACK INSTALLATION ................F-13 FIGURE F-7. GPS 400 MOUNTING RACK INSTALLATION ................F-15 FIGURE F-8. 400 SERIES RECOMMENDED PANEL CUTOUT DIMENSIONS ..........F-17 FIGURE F-9. 400 SERIES SYSTEM INTERFACE DIAGRAM ................F-19 FIGURE F-10.
  • Page 6 LIST OF FIGURES - CONTINUED FIGURE F-30. RMI/OBI INTERCONNECT......................F-61 FIGURE F-31. KING SERIAL PANEL DME TUNING INTERCONNECT............F-63 FIGURE F-32. KING SERIAL REMOTE DME TUNING INTERCONNECT ............F-65 FIGURE F-33. PARALLEL 2 OF 5 DME TUNING INTERCONNECT ..............F-67 FIGURE F-34. PARALLEL BCD/SLIP CODE DME TUNING INTERCONNECT ..........F-69 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.
  • Page 7 400 SERIES HARDWARE MOD LEVEL HISTORY The following table identifies hardware modification (Mod) Levels for the GPS 400, GNC 420 and GNS 430. Mod Levels are listed with the associated service bulletin number, service bulletin date, and the purpose of the modification. The table is current at the time of publication of this manual (see date on front cover) and is subject to change without notice.
  • Page 8 This page intentionally left blank Page vi 400 SERIES INSTALLATION MANUAL Rev Q 190-00140-02...

  • Page 9: General Description

    The GPS 400 is a GPS receiver certifiable for IFR en route, terminal, and non-precision approach operations. The GNC 420/ (A) includes all the features of the GPS 400, and also includes an IFR certified airborne VHF communications transceiver. The (A) model is a 28 Vdc unit with a 16 Watt COM transmitter.

  • Page 10: Technical Specifications

    Depth Behind Panel with Connectors (Measured from face of aircraft panel to rear of connector backshells) 3.8 lbs. (1.7 kg) GPS 400 Weight (Unit only) GPS 400 Weight (Installed with 4.9 lbs. (2.2 kg) rack and connectors) 4.5 lbs. (2.0 kg)
  • Page 11 -20 C to +55 C. For more details see Environmental Qualification Form. Humidity 95% non-condensing -1,500 ft to 50,000 ft Altitude Range Input Voltage Range (GPS 400) 11 to 33 V 22 to 33 V Input Voltage Range GNS 430 (011-00280-00) and GNC 420 (011-00506-00)
  • Page 12 1.3.4 COM Transceiver Specifications (GNC 420 and GNS 430 Only) ** TSO-C37d Class 4 & 6* (3 & 5 for “A” models), TSO-C38d Regulatory Compliance Class C & E, JTSO-2C37e (ETSO-2C37e for the GNS 430A), JTSO-2C38e (ETSO-2C38e for the GNS 430A), RTCA DO-186a ICAO Annex 10 Volume III (Part II –...
  • Page 13 1.3.5 VOR Specifications (GNS 430 Only) TSO C40c, JTSO-2C40c (ETSO-2C40c for the GNS 430A), Regulatory Compliance RTCA DO-196, EuroCAE ED-22B Receiver Audio Sensitivity At -103.5 dBm (S+N)/N shall not be less than 6 dB. -103.5 dBm or less for 60% of standard deflection. Course Deviation Sensitivity Flag The VOR Course Deviation Flag must be flagged:...
  • Page 14 1.3.6 LOC Specifications (GNS 430 Only) TSO C36e, JTSO-C36e (ETSO-C36e for the GNS 430A), Regulatory Compliance RTCA DO-195 CLASS A, EuroCAE ED-46B Receiver Audio Sensitivity At -103.5 dBm (S+N)/N shall not be less than 6 dB. -103.5 dBm or less for 60% of standard deflection. Course Deviation Sensitivity Flag The LOC Course Deviation Flag must be flagged:...

  • Page 15: Tso Limitations

    The GPS receivers in the 400 Series units are certified for IFR enroute, terminal, and non-precision approaches. The 400 Series initial certification was accomplished via STC’s by Garmin in a Piper PA32. See Appendix B for copies of the STC’s.

  • Page 16: Limited Warranty

    Garmin retains the exclusive right to repair or replace the unit or software or offer a full refund of the purchase price at its sole discretion. SUCH REMEDY SHALL BE YOUR SOLE AND EXCLUSIVE REMEDY FOR ANY BREACH OF WARRANTY.

  • Page 17: Installation

    INSTALLATION INTRODUCTION Careful planning and consideration of the suggestions in this section are required to achieve the desired performance and reliability from the 400 Series unit. Any deviations from the installation instructions prescribed in this document shall be accomplished in accordance with the requirements set forth in FAA AC 43.13-2A, and 14 CFR Part 43 Maintenance, Preventive Maintenance, Rebuilding, and Alteration.

  • Page 18: Figure 2-1. Gps Antenna And Unit Installation Considerations

    Figure 2-1. GPS Antenna and Unit Installation Considerations If a COM antenna is found to be the problem, a 1.57542 GHz notch filter (Garmin P/N 330-00067-00) may be installed in the VHF COM coax, as close to the COM as possible. This filter is not required for the GNC 420 and GNS 430 transmitters.

  • Page 19: Rack Considerations

    2.2.8 COM, VOR/LOC, and Glideslope Antenna Installation Instructions Install the COM, VOR/LOC, and Glideslope antennas according to the manufacturer’s recommendations. Avoid running other wires and coaxial cables near the VOR/LOC antenna cable. RACK CONSIDERATIONS Plan a location which gives the pilot complete and comfortable access to the entire keypad and which is plainly visible from the pilot’s perspective.
  • Page 20 HSI/CDI Indicator or EFIS This device displays Nav Flag, Left/Right, To/From, Glideslope Flag, and Up/Down. The indicator(s) used in conjunction with the GNS 430 VOR/ILS receivers shall be TSO'd. Qualified GPS Antenna This antenna must be one of those listed in the accessories list, or meet the following requirements: 1.

  • Page 21: Installation Procedure

    INSTALLATION PROCEDURE UNIT AND ACCESSORIES The 400 Series units are available under the following part numbers: 3.1.1 GNS 430 (A) CATALOG UNIT ACCESSORIES COLOR OPERATING MINIMUM 430A VOLTAGE XMIT 010-00139-00 011-00280-00 BLACK 10 W 010-00139-01 011-00280-00 BLACK 10 W 010-00139-10 011-00280-10 BLACK 14 or 28 Vdc...
  • Page 22 011-00504-10 GRAY 010-00171-11 011-00504-10 GRAY 1) The following accessories are included with the GPS 400 for those indicated with a “Y” above: MOUNTING RACK (115-00243-00) CONNECTOR KIT (011-00351-03) BACK PLATE ASSEMBLY (011-00676-03) GPS 400 PRODUCT INFO KIT (K00-00056-00) Alternate (secondary) power input available (review installation drawing).
  • Page 23 The following installation accessories are available: 1. GPS Antenna Options: GA 56 Antenna Kit, without cable (Mod 1 or later, Garmin P/N 010-10040-01). This kit contains the following items: ITEM GARMIN P/N GA 56 ANTENNA SUB-ASSEMBLY 011-00134-00 BACKING PLATE 115-00031-00...

  • Page 24: Data Base Options

    DATA BASE OPTIONS ITEM GARMIN P/N DATA CARD, WORLD WIDE 010-10201-00 DATA CARD, AMERICAS 010-10201-01 DATA CARD, INTERNATIONAL 010-10201-02 DATA CARD, TAWS/TERRAIN* 010-10201-20 * Required for TERRAIN MISCELLANEOUS OPTIONS ITEM GARMIN P/N CONNECTOR, BNC, MALE, CLAMP 330-00087-00 LOW-LOSS AVIATION ANTENNA...

  • Page 25: Cable Installation

    CAUTION Do not use construction grade RTV sealant or sealants containing acetic acid. These sealants may damage the electrical connections to the antenna. Use of these type sealants may void the antenna warranty. CABLE INSTALLATION 1. Route the coaxial cable to the rack location keeping in mind the recommendations of Section 2. Secure the cable in accordance with good aviation practice.
  • Page 26 NOTES 1. Insertion/extraction tools from ITT Cannon are all plastic; others are plastic with metal tip. 2. Non-Garmin part numbers shown are not maintained by Garmin and consequently are subject to change without notice. 3. Alternate contacts for 18 AWG wire: As an alternative to the Positronic contacts listed (and provided in the installation kit), the installer may use contacts made by ITT Cannon under P/N 031-1007-001.

  • Page 27: Rack Installation

    RACK INSTALLATION 1. The back plate of the rack may optionally be removed for ease of mounting in the aircraft panel. To do so, remove the two #4-40 screws, tilt the back plate away from the tray, and then slide the back plate to the side. 2.
  • Page 28 This page intentionally left blank Page 3-8 400 SERIES INSTALLATION MANUAL Rev Q 190-00140-02...

  • Page 29: System Interconnects

    MAIN OBS STATOR G (2.5V COMMON OBS) * Applies only to part numbers 011-00280-30 (GNS 430), 011-00836-10 (GNS 430A), 011-00506-30 (GNC 420), 011-00837-10 (GNC 420A) and 011-00504-10 (GPS 400). For applications requiring secondary or alternate power bus input. 400 SERIES INSTALLATION MANUAL...
  • Page 30 AIRCRAFT GROUND AIRCRAFT GROUND * Applies only to part numbers 011-00280-30 (GNS 430), 011-00836-10 (GNS 430A), 011-00506-30 (GNC 420), 011-00837-10 (GNC 420A) and 011-00504-10 (GPS 400). For applications requiring secondary or alternate power bus input. Page 4-2 400 SERIES INSTALLATION MANUAL...
  • Page 31 4.1.2 P4002 (GNC 420 and GNS 430 Only) View of J4002 connector from back of unit Pin Name RESERVED RESERVED RESERVED COM MIC KEY INTERCOM MIC HI COM MIC AUDIO HI 500 COM AUDIO HI RESERVED RESERVED RESERVED AIRCRAFT POWER AIRCRAFT POWER RESERVED TRANSMIT INTERLOCK...
  • Page 32 4.1.3 P4006 (GNS 430 Only) View of J4006 connector from back of unit Pin Name VOR/LOC +TO VOR/LOC +FROM (VOR/LOC COMMON) VOR/LOC +FLAG VOR/LOC -FLAG (VOR/LOC COMMON) VOR/LOC +LEFT VOR/LOC +RIGHT (VOR/LOC COMMON) RESERVED VOR/LOC COMPOSITE OUT VOR OBS ROTOR C VOR OBS ROTOR H (GROUND) VOR OBS STATOR E/G (VOR/LOC COMMON) VOR OBS STATOR F...

  • Page 33: Power, Lighting, And Antennas

    P4006 * Optional alternate power, applies only to part numbers 011-00280-30 GNS 430, 011-00836-10 GNS 430(A, 011- 00506-30 GNC 430, 011-00837-10 GNC 420(A), and 011-00504-10 (GPS 400). CAUTION To operate the GNC 420 P/N 011-00506-00 or GNS 430 P/N 011-00280-00 COM transceiver in a 14-volt aircraft, a 14 to 28 volt converter such as a KGS Electronics models RB-126 or UC-14-28 or equivalent must be used.

  • Page 34: Altimeter

    4.2.3 Power, Lighting, and Antennas Configuration Refer to section 5.2.6 for lighting configuration. 4.2.4 Power, Lighting, and Antennas Calibration and Checkout Refer to section 3.9 for the COM antenna checkout. 4.2.5 Power, Lighting, and Antennas Interconnect Refer to Figure F-13 on page F-27 for the power, lighting, and antennas interconnect. ALTIMETER 4.3.1 Altimeter Function...

  • Page 35: Main Indicator

    MAIN INDICATOR 4.4.1 Main Indicator Function The Main Indicator displays both lateral and vertical deviation from selected course, To/From indications, lateral and vertical flags and superflags. The “CDI” key on the bezel of the GNS 430 takes the place of remote “NAV/GPS” switches, and is used to toggle between display of GPS and VOR/ILS navigation display on a remote indicator.
  • Page 36 Refer to Figure F-15 on page F-31 for the generic main indicator interconnect. Refer to Figure F-16 on page F-33 for the interconnect between a GNS 430 and a Bendix/King KI 209A. Refer to Figure F-17 on page F-35 for the interconnect between a GPS 400 or GNC 420 and a Bendix/King KI 208A. Page 4-8...

  • Page 37: Annunciators/Switches

    ANNUNCIATORS/SWITCHES 4.5.1 Annunciators/Switches Function NOTE Initial certification of the 400 Series units was accomplished without use of any remote switches or annunciators, since the same switching and annunciation is available on the front panel of the 400 Series unit. However, if the 400 Series unit is not installed in the pilot’s normal field of view, some or all of the remote switches and annunciators may be required by your certification agency.
  • Page 38 4.5.1.11 INTEGRITY ANNUNCIATE The Integrity Annunciator illuminates when the GPS receiver detects a position error, or is unable to calculate the integrity of the position. 4.5.1.11.1 ILS/GPS APPROACH Output The ILS/GPS Approach output sinks 500 mA when GPS navigation is selected and GPS approach is active or when VLOC navigation is selected and an ILS channel has been selected.

  • Page 39: Serial Data

    400 Series unit to the other. NOTE The GNS 480 will not crossfill to a GPS 500, GNS 530/530A, GPS 400, GNC 420/420A, or a GNS 430/430A. The 400 Series unit can communicate with a BF Goodrich WX-500 Stormscope using the GPS RS 232 OUT 4 and GPS RS 232 IN 4 lines to display lightning strike information on the 400 Series unit.
  • Page 40 Label # Parameter Name 1 2 3 4 Greenwich Mean Time (BCD) 147G Magnetic Variation Distance to Go 251G Distance to Go Time to Go 260G Date (BCD) 261G GPS Discrete Word 1 275G LRN Status Word 300G Station Declination, Type, and Class Message Length/Type/Number 304G Message Characters 1-3...
  • Page 41 429 flight control interconnect. Refer to Figure F-26 on page F-53 for the Traffic Advisory System Interconnect. Refer to Figure F-27 on page F-55 for the Weather and Terrain Interconnect. Refer to Figure F-27 on page F-55 for RS-232 serial data interconnects with the Garmin GDL 49/69 Satellite Data Link Transceiver.

  • Page 42: Com/Vor/Ils Audio (Gnc 420 And Gns 430 Only)

    COM/VOR/ILS AUDIO (GNC 420 AND GNS 430 ONLY) 4.7.1 COM/VOR/ILS Audio Function and Emergency Mode Activation of COM MIC KEY enables COM MIC AUDIO and causes the transceiver to transmit. 500 COM AUDIO and 500 VOR/ILS AUDIO are 100 mW audio outputs that are intended to drive a headset or an audio panel.
  • Page 43 4.7.2.3 COM AUDIO, VOR/ILS AUDIO Pin Name Connector P4002 500 COM AUDIO HI P4002 500 COM AUDIO LO P4006 500 VOR/ILS AUDIO HI P4006 500 VOR/ILS AUDIO LO 500 COM AUDIO and 500 VOR/ILS AUDIO each supply 100 mW into a 500 load.

  • Page 44: Vor/Ils Indicator (Gns 430 Only)

    VOR/ILS INDICATOR (GNS 430 ONLY) 4.8.1 VOR/ILS Indicator Function NOTE Because the GNS 430 includes a “CDI” button that performs switching between GPS and VOR/ILS on a remote indicator, it is seldom necessary to use these outputs to drive an indicator.
  • Page 45 4.8.2.4 Flag Pin Name Connector VOR/LOC +FLAG P4006 VOR/LOC -FLAG (VOR/LOC COMMON) P4006 GLIDESLOPE +FLAG P4006 GLIDESLOPE +DOWN/-FLAG (GLIDESLOPE P4006 COMMON) The Flag output is capable of driving up to three 1000 meter loads. When valid information is present (Flag OUT OF VIEW) the Flag output is 375 ±80 mV When invalid information is present (Flag IN VIEW) the Flag output is 0 ±25 mV 4.8.2.5 OBS...

  • Page 46: Rmi/Obi

    RMI/OBI 4.9.1 RMI/OBI Function The MAIN OBI output provides bearing information from the active waypoint for Bendix/King Serial OBI devices based upon the 400 Series unit’s GPS navigation. For the GNS 430, the MAIN OBI output may be configured so that it sends VOR/ILS bearing information when VLOC is selected by the GNS 430 CDI key.

  • Page 47: Dme Tuning (Gns 430 Only)

    4.10 DME TUNING (GNS 430 ONLY) 4.10.1 DME Tuning Function The GNS 430 can channel a DME based on the tuned VLOC frequency. The GNS 430 outputs 2 of 5, BCD or Slip parallel DME and King Serial DME channeling format. When DME COMMON is held low, the GNS 430 actively tunes the DME.
  • Page 48 4.10.3 DME Tuning Configuration Refer to section 5.2.12 for the DME tuning configuration. 4.10.4 DME Tuning Calibration and Checkout None. 4.10.5 DME Tuning Interconnect Refer to Figure F-31 on page F-63 for the King Serial Panel DME tuning interconnect. Refer to Figure F- 32 on page F-65 for the King Serial Remote DME tuning interconnect.

  • Page 49: Terrain

    4.11 TERRAIN Terrain Awareness and Warning System (TAWS) is meant to provide the flight crews with both aural and visual alerts to aid in preventing an inadvertent Controlled Flight Into Terrain (CFIT) event. While the 400 Series unit cannot be fully TSO-C151b Class B TAWS capable due to hardware constraints, a TERRAIN version is available.
  • Page 50 4.11.1 TERRAIN Configuration Refer to Section 5.2.3 for TERRAIN configuration. 4.11.2 TERRAIN Calibration and Checkout Refer to Section 5.3.10 for TERRAIN checkout procedure. 4.11.3 TERRAIN Interface 400 Series TERRAIN functionality does not have any additional interface requirements. Page 4-22 400 SERIES INSTALLATION MANUAL Rev Q 190-00140-02...

  • Page 51: Post Installation Configuration & Checkout Procedure

    The configuration pages shown here reflect MAIN software version 5.01. All configuration pages shown apply to the GNS 430, but not all apply to the GPS 400 or GNC 420. Those pages and fields that apply only to certain 400 Series units are denoted as such.
  • Page 52 Bendix/King KFC 400 Garmin w/TIS Garmin GTX 330 This is a Garmin data concentration format. Only high speed ARINC 429 should be used. Garmin GTX 330 w/TIS (NOTE: When interfacing to a Garmin GTX 330 without TIS select EFIS/Airdata on the 400 series unit. See EFIS/Airdata section above.)

  • Page 53: Figure 5-2. Main Rs232 Config Page

    ARINC 429 data as defined by the General Aviation Manufacturers’ Association (GAMA) General Aviation Subset, 2 Edition. The output data includes navigation and flight plan information to the following systems: Garmin GAD 42 Interface Adapter Bendix/King EFS 40/50 Sandel SN3308 Collins EFIS 84...
  • Page 54 No unit(s) connected to output of this channel Aviation Serial position, altitude, velocity, and navigation data to the following units: Garmin GPSMAP 195 or GPS III Pilot Argus 3000, 5000, or 7000 Moving Map Electronics International FP-5L Fuel Flow Computer (non-TSO’d)

  • Page 55: Figure 5-3. Main System Config

    5.2.3 MAIN SYSTEM CONFIG Page Select the MAIN SYSTEM CONFIG Page (see Figure 5- 3). This page allows you to configure the Fuel and Terrain options. Fuel Select Fuel in the CONFIGURE field to select the FUEL TYPE (AV Gas, Jet A, or Jet B) Figure 5-3.

  • Page 56: Figure 5-5. Main Inputs 1 Page

    5.2.4 MAIN INPUTS 1 Page Select the MAIN INPUTS 1 Page (see Figure 5-5). This page (along with the MAIN INPUTS 2 Page) allows you to monitor the data on ARINC 429, RS-232 and other electrical inputs. This is used for verifying electrical interfaces during installation and troubleshooting.
  • Page 57 5.2.6 MAIN LIGHTING Page Select the MAIN LIGHTING Page (see Figure 5-8). This page allows you to set display parameters that affect the display backlight and key lighting brightness. The DISPLAY and KEY lighting characteristics are adjusted separately, each with the following fields: LIGHTING Shows the current level of display backlighting, based on the lighting input source (lighting bus voltage, or the ambient...

  • Page 58: Figure 5-9. Main Lighting Page (Display Lighting From Lighting Bus)

    OFFSET Adjusts the lighting level up or down for any given input level. This field has a range of 0 (zero) to 99, and is set to 50 at the factory. This may also be used to match lighting curves with other equipment in the panel.

  • Page 59: Figure 5-13. Main Discrete Outputs Page

    EXTERNAL SWITCH STATE Selection Verify That: The box is filled in while a remote CDI source select switch is pressed. RMT CDI RMT OBS The box is filled in while a remote OBS switch is pressed. 5.2.9 MAIN DISCRETE OUTPUTS Page Select the MAIN DISCRETE OUTPUTS Page (see Figure 5-13).
  • Page 60 NAV FLAG (LAT/VERT) Selection Verify That: Hidden The LAT/VERT flag is hidden. In view The LAT/VERT flag is in view. TO-FROM Selection Verify That: The FROM flag is in view. FROM Hidden The TO/FROM flag is hidden. The TO flag is in view. SELECTED COURSE Select 150°...
  • Page 61 OBI SOURCE (GNS 430 Only) Selection Description The MAIN King Serial OBI outputs are always GPS. This is useful if it is Always GPS desired to switch a Bendix/King KI 229 or KNI 582 RMI pointer independently from the GNS 430 CDI button. The MAIN King Serial OBI outputs are GPS or VOR, and switchable by the Track CDI GNS 430 CDI button.

  • Page 62: Figure 5-15. Com Setup Page (Gnc 420 And Gns 430 Only)

    5.2.11 COM SETUP Page (GNC 420 and GNS 430 Only) Select the COM SETUP Page (see Figure 5-15). These values are set at the factory and seldom require calibration. FREQ Selects a VHF communication frequency. For purposes of setting the squelch and sidetone levels, only the frequencies 118.000, 127.000, and 136.975 MHz can be used.

  • Page 63: Figure 5-16. Vor Discrete Inputs Page (Gns 430 Only)

    5.2.12 VOR DISCRETE INPUTS Page (GNS 430 Only) Select the VOR DISCRETE INPUTS Page (see Figure 5- 16). This page allows you to verify the operation of an external VLOC transfer switch that may be present in the installation. Figure 5-16. VOR DISCRETE INPUTS Page Selection Verify That:...
  • Page 64 TO-FR Selection Verify That: FROM The FROM flag is in view. The TO/FROM flag is hidden. Hide The TO flag is in view. SELECTED COURSE Select 150° on the CDI/HSI that is connected to the 400 Series VOR/LOC/GS OBS inputs. The SELECTED COURSE field should indicate near to 150°...

  • Page 65: Figure 5-19. Stormscope Config Page

    DME MODE Selection Description Directed freq 1 If the GNS 430 is connected to a multi-channel ARINC 429 DME, channel 1 of that DME is tuned. “Directed freq 1” should be selected if a single- channel ARINC 429 DME is tuned. If the GNS 430 is connected to a multi-channel ARINC 429 DME, channel 2 Directed freq 2 of that DME is tuned.

  • Page 66: Figure 5-23. Traffic Page (Tcad)

    5.2.18 TRAFFIC Page (Only if 400 Series unit is configured for BFG Skywatch or Ryan TCAD interfaces) Select the TRAFFIC Page (see Figure 5-22). This page shows the BFG Skywatch or Ryan TCAD modes of operation and current traffic situation. For BFG Skywatch, this page shows: 1.

  • Page 67: Figure 5-26. Data Link Page

    Figure 5-26. DATA LINK Page is displayed. Select “Data Link Status” (Figure 5-26). For complete installation and configuration information refer to the GDL 49 Installation Manual (Garmin P/N 190-00231-00) or the GDL 69 Installation Manual (Garmin P/N 190-00355-02). 400 SERIES INSTALLATION MANUAL...

  • Page 68: Additional Ground Tests

    ADDITIONAL GROUND TESTS 5.3.1 Connector Engagement Test 1. Turn on the 400 Series unit, and turn on the avionics master switch (if applicable). 2. Place the 400 Series unit in the rack and engage the pawl mechanism. 3. Turn the Allen screw of the locking pawl slowly clockwise until the 400 Series unit just comes on. A “T”...
  • Page 69 5.3.4 Deviation & Flags Check 5.3.4.1 Analog Deviation & Flags The analog deviation (LEFT/RIGHT and UP/DOWN), TO/FROM, and FLAG (lateral and vertical) outputs to a CDI or HSI should be verified in flight with potential sources of electrical noise such as autopilot, flaps, gear, heater blowers, etc.
  • Page 70 5.3.7 VHF COM Check (GNC 420 and GNS 430 Only) A flight test is recommended after the installation is complete to ensure satisfactory performance. To check the communications transceiver, maintain an appropriate altitude and contact a ground station facility at a range of at least 50 nautical miles. Contact a close ground station. Press the squelch disable button to defeat the automatic squelch feature and listen for any unusual electrical noise which would increase the squelch threshold.

  • Page 71: Appendix A. Certification Documents

    ICA. The following is a suggested ICA for a Garmin 400 Series unit installation. Some of the checklist items do not apply, in which case they should be marked “N/A” (Not Applicable). In this sample, square braces are used to indicate instances where explicit words should be substituted (e.g., replace “[400 Series unit]”...
  • Page 72 6. Troubleshooting Information Refer to the 400 Series Maintenance Manual. 7. Removal and Replacement Information Refer to section 3.8 of this manual. If the unit is removed and reinstalled, a functional check of the equipment should be conducted in accordance with section 5.3 of this manual. 8.
  • Page 73 19. Terrain Database Refer to the “400/500 Series Garmin Optional Displays Pilot’s Guide Addendum” for terrain database update, regionalization, and status information. 400 SERIES INSTALLATION MANUAL Page A-3 190-00140-02 Rev Q...

  • Page 74: Environmental Qualification Form-Gns 430

    TSO-C34e, JTSO-C34e (GLIDESLOPE RCVR.) MANUFACTURER’S SPECIFICATION AND/OR OTHER APPLICABLE SPECIFICATION: 004-00044-00 MANUFACTURER: Garmin International, Inc. ADDRESS: 1200 E. 151 Street, Olathe, Kansas 66062 NOTE: The following information provides examples only. It is not intended to be a comprehensive listing of all test conditions.

  • Page 75: Environmental Qualification Form-Gnc 420

    TSO-C38d Class C & E, JTSO-2C38e (COM RECEIVER) MANUFACTURER’S SPECIFICATION AND/OR OTHER APPLICABLE SPECIFICATION: 004-00044-00 MANUFACTURER: Garmin International, Inc. ADDRESS: 1200 E. 151 Street, Olathe, Kansas 66062 NOTE: The following information provides examples only. It is not intended to be a comprehensive listing of all test conditions.

  • Page 76: Environmental Qualification Form-Gps 400

    Environmental Qualification Form—GPS 400 NOMENCLATURE: GPS 400 Airborne GPS System TYPE/MODEL/PART NO.: 010-00171-(), which includes 011-00504-00 TSO/JTSO COMPLIANCE: TSO-C129a Class A (1) (GPS) MANUFACTURER’S SPECIFICATION AND/OR OTHER APPLICABLE SPECIFICATION: 004-00044-00 MANUFACTURER: Garmin International, Inc. ADDRESS: 1200 E. 151 Street, Olathe, Kansas 66062 NOTE: The following information provides examples only.
  • Page 77 TSO COMPLIANCE: C129 Class A (1) MANUFACTURER’S SPECIFICATION AND/OR OTHER APPLICABLE SPECIFICATION: 004-00015-00 MANUFACTURER: Garmin International, Inc. ADDRESS: 1200 E. 151 Street, Olathe, Kansas 66062 NOTE: The following information provides examples only. It is not intended to be a comprehensive listing of all test conditions.
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  • Page 79: Appendix B. Stc Permission

    Consistent with N8110.69 or Order 8110.4, Aviation authority approved installers are hereby granted permission to use STC’s #SA00705WI (GNS 430 and GNS 430A), #SA00801WI (GNC 420 and GNC 420A), and #SA00800WI (GPS 400) data to modify aircraft. 400 SERIES INSTALLATION MANUAL...
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  • Page 89: Appendix C. 400 Series Rs-232 Aviation Data Format

    Appendix C. 400 SERIES RS-232 AVIATION DATA FORMAT ELECTRICAL INTERFACE The output signals shall be compatible with RS-232C. Data shall be generated at 9600 baud with a word length of 8 bits, one stop bit, and no parity. GENERAL OUTPUT FORMAT The 400 Series RS-232 data shall have the following general format: - ASCII start-of-text character (02 hex) - Type 1 output sentences (see following paragraphs for description)
  • Page 90 The following table describes the Type 1 output sentence item designator (id) and item data (dddd) fields. If data for these sentences is invalid or unavailable, dashes ("-") are used to fill in all non-blank character positions. Ident (1 byte) Data (10 bytes) Description 1 2 3 4 5 6 7 8 9 0...
  • Page 91 OUTPUT SENTENCE TYPE 2 The 400 Series Type 2 output sentence shall have the following general format: - item designator (3 ASCII characters) - sequence number (1 binary byte) - waypoint identifier (5 ASCII characters) - waypoint latitude (3 binary bytes) - waypoint longitude (4 binary bytes) mvar - magnetic variation at waypoint (2 binary bytes)
  • Page 92 The following table describes the Type 2 output sentence item designator (id), sequence number (seq), waypoint identifier (wpt), waypoint latitude (lat), waypoint longitude (lon), and magnetic variation at waypoint (mvar) fields. Field Byte Format Description 7 6 5 4 3 2 1 0 ASCII character 'w' (77 hex) Two ASCII numeric characters representing route sequence number of waypoint (01 to 31)

  • Page 93: Appendix D. 400 Series Rs-232 Fuel/Air Data Input Format

    (0x0d) Note: Checksum is calculated by adding each byte in the message (1 through 14). D.3 ICARUS ALTITUDE SENTENCE The Garmin 400 Series units shall be capable of receiving the following 10-byte message from the Icarus Altitude Serializer: ALT<sp>12345<CR>...
  • Page 94 D.4 SHADIN FUEL FLOW SENTENCE The Garmin 400 Series units shall be capable of receiving the following 55-byte message from the Shadin Fuel Flow Indicator: <STX>K0543.2<sp>0100.0<sp>0040.0<sp>0060.0<sp>0123.4<sp>0045.4<sp>0078.0<sp>123<ETX> Where: <STX> start-transmit character (0x02) units designation (i.e., Gallons, Liters, Kilograms, B[pounds]) 0543.2 total fuel remaining (i.e., ASCII-coded decimal format: 0x30, 0x35, 0x34, 0x33, 0x2e, 0x32) <sp>...
  • Page 95 D.6 SHADIN FUEL/AIRDATA COMPUTER SENTENCE The Garmin 400 Series units shall be capable of receiving the following message strings from the Shadin Fuel/Airdata or Airdata Computer: D.6.1 SHADIN “Z” FORMAT <STX> ZA012<CR><LF> "ZA" (ASCII characters); "012" represents indicated Air Speed (knots) ZB345<CR><LF>...
  • Page 96 D.6.2 SHADIN “G” FORMAT <STX> GA012<CR><LF> "GA" (ASCII characters); "012" represents indicated Air Speed (knots) GB345<CR><LF> "GB" (ASCII characters); "345" represents true Air Speed (knots) GC678<CR><LF> "GC" (ASCII characters); "678" represents Mach Speed (thousandths) GD<+/->9012<CR><LF> "GD" (ASCII characters); sign; "9012" represents pressure altitude (tens of feet) GE<+/->3456<CR><LF>...
  • Page 97 D.6.3 SHADIN “S” FORMAT <STX> SA012<CR><LF> "SA" (ASCII characters); "012" represents indicated Air Speed (knots) SB345<CR><LF> "SB" (ASCII characters); "345" represents true Air Speed (knots) SC678<CR><LF> "SC" (ASCII characters); "678" represents Mach Speed (thousandths) SD<+/->9012<CR><LF> "SD" (ASCII characters); sign; "9012" represents pressure altitude (tens of feet) SE<+/->3456<CR><LF>...
  • Page 98 Where: <STX> start-transmit character (0x02) <CR> carriage-return character (0x0d) <LF> line-feed character (0x0a) <+/-> sign indicator (0x2b["+"] or 0x2d["-"]) <ETX> end-transmit character (0x03) Note: Checksum is calculated by adding each byte in the message (including all characters from <STX> up to and including the error log/reason indicator), such that carries are discarded to give a one byte result. The ASCII-coded decimal representation of that byte is given, ranging from 0 (0x30, 0x30, 0x30) to 255 (0x32, 0x35, 0x35).

  • Page 99: Appendix E. 400 Series Lru Interface Overview

    The following tables provide a quick overview of some of the equipment that can be interfaced with the Garmin 400 Series units. This is not a complete listing however; it only represents those units listed in Appendix F of this manual. When installing equipment on the aircraft always refer to the manufacturers’...
  • Page 100 Litton IRU/AHRS KAU 461 AHC 85E Laseref LTR 81 LTN 90-100 HG 1075 AB LTN-91 HG 1095 AB LTN-92 Function Bendix/King Garmin Century Collins Sperry S-Tec KI 202A GI 102/A NSD 360A 331A-6P RD 550A ST 180 Indicator KI 203...

  • Page 101: Appendix F. Drawings And Interconnects

    Figure F-1—GA 56 Antenna Installation Drawing Figure F-2—GNS 430 Mounting Rack Dimensions Figure F-3—GNC 420 Mounting Rack Dimensions Figure F-4—GPS 400 Mounting Rack Dimensions Figure F-5—GNS 430 Mounting Rack Installation Figure F-6—GNC 420 Mounting Rack Installation Figure F-7—GPS 400 Mounting Rack Installation Figure F-8—400 Series Recommended Panel Cutout Dimensions...

  • Page 102: Figure F-29-Vor/Ils Indicator Interconnect

    Figure F-29—VOR/ILS Indicator Interconnect Figure F-30—RMI/OBI Interconnect Figure F-31—King Serial Panel DME Tuning Interconnect Figure F-32—King Serial Remote DME Tuning Interconnect Figure F-33—Parallel 2 OF 5 DME Tuning Interconnect Figure F-34—Parallel BCD/Slip Code DME Tuning Interconnect Page F-2 400 SERIES INSTALLATION MANUAL Rev.

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