Garmin GDL 88 Pilot's Manual
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Garmin GDL 88 Pilot's Manual

Garmin GDL 88 Pilot's Manual

Ads-b transceiver
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GDL 88
ADS-B Transceiver
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Summary of Contents for Garmin GDL 88

  • Page 1 GDL 88 ADS-B Transceiver Pilot’s Guide...
  • 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 for personal...
  • Page 3 FAA/FCC regulations. NOTE: All visual depictions contained within this document, including images of the GDL 88 and the bezel, displays, and screens of other products are subject to change and may not reflect the most current software or hardware.
  • Page 4 Operation of this device is subject to the following conditions: (1) This device may not cause harmful interference, and (2) this device must accept any interference received, including interference that may cause undesired operation. 190-01122-03 Rev. C Garmin GDL 88 ADS-B Transceiver Pilot’s Guide...
  • Page 5 Record of Revisions Part Number Revision Date Description 190-01122-03 10/19/12 Initial release 04/12/13 Prepared document for print production. 06/19/13 Revised NEXRAD description. 190-01122-03 Rev. C Garmin GDL 88 ADS-B Transceiver Pilot’s Guide...
  • Page 6 Registration ensures that you will be notified of product updates and new products and provides lost or stolen unit tracking. Please, have the serial number of your unit handy, connect to our web site (www.garmin.com or https://fly.garmin.com/fly-garmin) and look for our Product Registration link on the Home page.

  • Page 7: Table Of Contents

    GDL 88 ADS-B In Data ................. 4-1 Traffic ....................4-2 4.2.1 Traffic Applications – SURF, AIRB, etc ........4-2 4.2.2 GDL 88 Integration with TCAD/TAS/TCAS I ......4-5 4.2.3 No-Heading Source Traffic Information ........4-6 4.2.4 Conflict Situational Awareness (CSA) ........4-6 Weather ....................5-1...
  • Page 8 Installation configurations ..............6-1 Possible Installation Configurations ............6-1 6.1.1 GDL 88 with ADS-B Out Transmission Enabled......6-1 6.1.2 GDL 88 with ADS-B Out Transmission Disabled ....... 6-1 6.1.3 GDL 88 Only – No Display ............. 6-1 Interfaces .................... 6-2 6.2.1 Audio Panel................

  • Page 9: Introduction

    The GDL 88 is a remotely mounted ADS-B transceiver. There are four models of the GDL 88(D). Models with a single bottom mounted UAT antenna meet TSO C154c Class A1S and are available with or without an internal GPS/SBAS receiver.

  • Page 10: Gdl 88 Part Numbers

    • Traffic alerting The GDL 88 provides aural and visual cues of impending traffic conflicts, to include directional aural (“Traffic, Traffic, Two O’clock, Two Miles, Low”). • Single point of entry for transponder squawk code, IDENT, and...

  • Page 11: Ads-B System Overview

    ADS-B is currently operational. In the areas highlighted in blue, you can already start taking advantage of ADS-B’ s datalink traffic and subscription-free weather services if you’re equipped with an ADS-B “In” solution. Figure 2-1 ADS-B Ground Stations (mid-2012) - FAA Illustration 190-01122-03 Rev. C Garmin GDL 88 ADS-B Transceiver Pilot’s Guide...
  • Page 12 Figure 2-2 ADS-B Coverage vs Altitude (Planned for 2014) - FAA Illustration 190-01122-03 Rev. C Garmin GDL 88 ADS-B Transceiver Pilot’s Guide...

  • Page 13: Ads-B - Broadcast (Ads-B)

    Figure 2-3 ADS-B Operation - FAA Illustration Garmin display units have the capability to show the status of the ground station services being received. Examples for the GTN and GNS products are shown below. See the display device Pilot Guide for the symbology used on that display.

  • Page 14: Automatic Dependent Surveillance - Rebroadcast (Ads-R)

    MHz data link in addition to traffic reports and FIS-B weather uplinks on the 978 MHz data link. This allows the GDL 88 to directly receive all ADS-B position reports from aircraft in the vicinity guaranteeing the most complete traffic picture is available to the flight crew without relying on being within ground station coverage and ADS-R to provide this complete picture.

  • Page 15: Traffic Information Service - Broadcast (Tis-B)

    NOTE: Even if the display is showing TIS-B traffic, unless the TIS-B participant indication is present (see Section 2.1) , TIS-B services are not being provided specific to your aircraft and the traffic picture may not be complete. 190-01122-03 Rev. C Garmin GDL 88 ADS-B Transceiver Pilot’s Guide...

  • Page 16: Flight Information Service - Broadcast (Fis-B)

    Information Manual section 7-1-11(d)(7). Examples of these products include NEXRAD Precipitation, Graphical TFRs, Graphical AIRMETs/SIGMETs, METARs, TAFs, winds aloft, status of Special Use Airspaces (SUA), and textual NOTAMs. Figure 2-6 FIS-B Operation - FAA Illustration 190-01122-03 Rev. C Garmin GDL 88 ADS-B Transceiver Pilot’s Guide...

  • Page 17: Gdl 88 Ads-B Out

    • Velocity Integrity • Air/Ground State • Identifying information (Transponder Squawk Code, Call sign, ICAO Registration Number, Flight ID), integrity, and capability data. Figure 3-1 GDL 88 ADS-B In and Out 190-01122-03 Rev. C Garmin GDL 88 ADS-B Transceiver Pilot’s Guide...

  • Page 18: Self-Interrogation

    The following table describes the aircraft that will be observed by a GDL 88 equipped aircraft according to the level of equipment installed in the other aircraft. Other Aircraft Equipage Viewable by GDL 88 Equipped Aircraft 1090ES Out Equipped UAT Receive Only Capable...

  • Page 19: Anonymous Mode

    Anonymous Mode is not available when installed in an aircraft with a Mode S transponder. Air/Ground Determination If a weight on wheels or squat switch is installed, the GDL 88 will use that input to determine air/ground status. If not, then air/ground status is purely based on GPS-derived information.
  • Page 20 This page intentionally left blank 190-01122-03 Rev. C Garmin GDL 88 ADS-B Transceiver Pilot’s Guide...

  • Page 21: Gdl 88 Ads-B In

    GDL 88 ADS-B IN The ADS-B In capability allows the GDL 88 to receive data through the UAT (978 MHz) and the 1090 MHz receiver. The UAT receives data directly from another ADS-B transmitting aircraft, ADS-B data from ground stations (ADS-R), TIS-B information from ground stations, and FIS-B data from ground stations.

  • Page 22: Traffic

    TIS-B’s service volumes and the incomplete equipage/ adoption of ADS-B Out equipment, NOT ALL TRAFFIC WILL BE OBSERVED by the GDL 88. The flight crew must rely on “see and avoid” procedures to detect and avoid traffic. In addition, when operating on the edges of ATC...
  • Page 23 ADS-B and Orientation TCAS Status and Altitude Filter Traffic Display Radius Ownship Icon Selected Vector Motion and Duration Touch To View Traffic Menu Figure 4-3 SURF Display with the GTN 7XX 190-01122-03 Rev. C Garmin GDL 88 ADS-B Transceiver Pilot’s Guide...
  • Page 24 AIRB and SURF is depicted in the selected traffic data on the traffic page of both the GTN 6XX and 7XX. NOTE: Displays not capable of SURF will always run the AIRB application. 190-01122-03 Rev. C Garmin GDL 88 ADS-B Transceiver Pilot’s Guide...

  • Page 25: Gdl 88 Integration With Tcad/Tas/Tcas I

    Figure 4-4 GDL 88 With TCAS Not In Ground Station Coverage When an active traffic system is interfaced with a GDL 88, the GDL 88 receives traffic from the active traffic system and attempts to match (or “correlate”) this traffic with ADS-B traffic that the GDL 88 has received and is already tracking.

  • Page 26: No-Heading Source Traffic Information

    When a GDL 88 and TAS/TCAS system are integrated, the GDL 88 controls the mode of the TAS/TCAS system using the air/ground logic in the GDL 88, as well as from the mode controls available on the interfaced display. 4.2.3...
  • Page 27 10,000 (Geodetic) (Geodetic) 10,000- 10,000- 0.80 20,000 20,000 (Geodetic) (Geodetic) 20,000- 20,000- 1.10 42,000 42,000 (Geodetic) (Geodetic) Above 42,000 Above 1200 1.10 42,000 (Geodetic) (Geodetic) Table 4-2 Traffic Alert Functionality 190-01122-03 Rev. C Garmin GDL 88 ADS-B Transceiver Pilot’s Guide...
  • Page 28 This page intentionally left blank 190-01122-03 Rev. C Garmin GDL 88 ADS-B Transceiver Pilot’s Guide...

  • Page 29: Weather

    WEATHER The Flight Information Services (FIS-B) function is capable of displaying textual and graphic weather information with GDL 88 installations. No subscription for FIS-B services is required with the GDL 88. The FIS-B Function is based on a ground-to-air data link and requires that the appropriate ground systems are broadcasting weather data and the aircraft is within reception range of the Ground Broadcast Transceiver (GBT).

  • Page 30: Fis-B Nexrad

    Precipitation intensity is displayed using colors corresponding to the dBZ values. An example of how precipitation data is color coded follows: Figure 5-1 Sample FIS-B Weather Precipitation Legend 190-01122-03 Rev. C Garmin GDL 88 ADS-B Transceiver Pilot’s Guide...

  • Page 31: Nexrad Abnormalities

    5 minutes (5 nautical miles = 9.26 km) wide. Above 60 degrees of latitude the block widths double to 3 minutes/nautical miles for Regional (no CONUS above 60 degrees). 190-01122-03 Rev. C Garmin GDL 88 ADS-B Transceiver Pilot’s Guide...

  • Page 32: Nexrad Intensity

    NEXRAD imagery displayed on the MAP and FIS-B Weather Pages of the affected products is an indicator of poor FIS-B reception. Examples below display areas where FIS-B data is degraded due to poor reception: 190-01122-03 Rev. C Garmin GDL 88 ADS-B Transceiver Pilot’s Guide...
  • Page 33 The Regional NEXRAD selection shows regional NEXRAD radar information within 250 miles of the aircraft location. Regional NEXRAD data is updated every 5 minutes (10 minutes for clear air mode). 190-01122-03 Rev. C Garmin GDL 88 ADS-B Transceiver Pilot’s Guide...

  • Page 34: Fis-B Tfrs

    IFR (ceiling 500 to below 1000 ft. AGL and/or visibility one mile to less than three miles) Low IFR (ceiling below 500 ft. AGL or visibility less than one mile) Unknown Table 5-2 METAR Symbols 190-01122-03 Rev. C Garmin GDL 88 ADS-B Transceiver Pilot’s Guide...

  • Page 35: Fis-B Pireps

    SIGMETs and AIRMETs SIGMETs (SIGnificant METerological Information) and AIRMETs (AIRmen’ s METerological Information) are broadcast for potentially hazardous weather considered of importance to aircraft. The update rate is approximately every 20 minutes. 190-01122-03 Rev. C Garmin GDL 88 ADS-B Transceiver Pilot’s Guide...
  • Page 36 This page intentionally left blank 190-01122-03 Rev. C Garmin GDL 88 ADS-B Transceiver Pilot’s Guide...

  • Page 37: Installation Configurations

    1090 and 978 MHz links using its dual link receive capabilities. In order for the ADS-B Out mandate to be met, another LRU, Such as a Garmin GTX 330ES transponder, must be installed that complies with the ADS-B Out mandate on either the 978 MHz or 1090 MHz link.

  • Page 38: Interfaces

    The GDL 88 uses the ownship GPS position for creation of the ADS-B Out messages as well as the receipt and tracking of ADS-B In targets. The GDL 88 without the internal GPS WAAS requires at least one compatible GPS position source be installed, while the GDL 88 with the internal GPS WAAS engine may optionally be interfaced with compatible sources.

  • Page 39: Glossary

    Extended Squitter With Extended Squitter capabilities, position, velocity, and heading information are automatically transmitted by the 1090 transponder to other aircraft and ground stations. 190-01122-03 Rev. C Garmin GDL 88 ADS-B Transceiver Pilot’s Guide...
  • Page 40 ADS-B and external traffic system targets on a display to be used by the flight crew for situational awareness. Traffic Advisory. Traffic Advisory System. TCAD Traffic Collision Avoidance Device. 190-01122-03 Rev. C Garmin GDL 88 ADS-B Transceiver Pilot’s Guide...
  • Page 41 ADS-B Out and ADS-B In. Universal Access Transceiver. The GDL 88 UAT transmits ADS-B Out data on the 978 MHz (UAT) frequency. The GDL 88 UAT receives ADS-B, ADS-R, TIS-B, and FIS-B on 978 MHz XPDR Transponder.
  • Page 42 This page intentionally left blank 190-01122-03 Rev. C Garmin GDL 88 ADS-B Transceiver Pilot’s Guide...

  • Page 43: Appendix

    GDL 88 fault present. For example, if both a No Position (priority 2) fault and a Fault (priority 3) are present, the ADS-B annunciator will indicate the presence of a No Position fault.

  • Page 44: Servicing Your Unit

    Garmin dealer for repairs, or contact Garmin Product Support at 1-866-739-5687. The GDL 88 is sealed to protect the unit. Any attempt to open the case to change or modify the unit in any way voids your warranty and may result in permanent damage to the equipment.

  • Page 45: Software License Agreement

    Software License Agreement BY USING THE GDL 88, YOU AGREE TO BE BOUND BY THE TERMS AND CONDITIONS OF THE FOLLOWING SOFTWARE LICENSE AGREEMENT. PLEASE READ THIS AGREEMENT CAREFULLY. Garmin grants you a limited license to use the software embedded in this device (the “Software”) in binary executable form in the normal operation of the...

  • Page 46: Limited Warranty

    Online auction confirmations are not accepted for warranty verification. To obtain warranty service, an original or copy of the sales receipt from the original retailer is required. Garmin will not replace missing components from any package purchased through an online auction.

  • Page 47: Index

    GBT 5-1 Radar altitude 4-6 GDL 88 models 1-1 Record of Revisions iii Geodetic altitude 4-6 Reflectivity 5-4 Glossary 7-1 Regional NEXRAD 5-1, 5-5 GPS 6-2 Graphical Weather 5-2, 7-2 Index-1 190-01122-03 Rev. C Garmin GDL 88 ADS-B Transceiver Pilot’s Guide...
  • Page 48 Text 5-1 TFR 5-6 Thunderstorm 5-2 Time 5-1 TIS-B 2-5 Tornados 5-2 Troubleshooting 8-1 VFR 3-3, 5-6 Warnings i, 5-2 Warranty 8-4 Weather 5-1 Wind 5-1 Winds aloft 5-1, 5-7 Index-2 190-01122-03 Rev. C Garmin GDL 88 ADS-B Transceiver Pilot’s Guide...
  • Page 50 © 2013 GARMIN Corporation GARMIN International, Inc. 1200 East 151 Street, Olathe, Kansas 66062, U.S.A. Tel. 913/397.8200 or 866/739.5687 Fax 913/397.8282 Garmin AT, Inc. 2345 Turner Rd., S.E., Salem, Oregon 97302, U.S.A. Tel. 503/581.8101 or 800/525.6726 Fax. 503/364.2138 Garmin (Europe) Ltd.

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