Introduction; About This Manual; System Description; Altitude Source - Garmin MX20 Installation Manual

1 Introduction

1.1 About This Manual

This manual describes the installation of the MX20 Multi-Function Display. It is intended for use by
persons certified by the Federal Aviation Administration (FAA) to install aircraft devices. It includes
installation and checkout procedures for the MX20 to standards described in 14CFR Part 43. This
installation manual applies to MX20 part numbers: 430-0270-0( ), 430-0270-5( ), 430-0270-6( ), and
430-0270-7( ).
Section 1
Section 2
Section 3
Section 4
Section 5
Section 6
Section 7
Appendix A
Appendix B

1.2 System Description

The MX20 is a multi-function display capable of displaying moving maps, terrain awareness,
obstructions, and VFR/IFR charting functions. An optional UAT data link provides ADS-B traffic, FIS-B
and TIS-B information. Interfacing to the WX-500 provides lightning strike information on the display.
Interfacing to the Garmin AT GDL 69 or WSI Inflight sensor may provide NEXRAD images, graphic and
text METARs, graphic and text TAFs, EchoTops, Sigmet, Airmet, and Temporary Flight Restriction
(TFR), and other information, depending on the selected subscription. Interfacing to the Garmin AT GDL
69A provides XM Satellite Radio audio entertainment (with subscription) in addition to the information
available with the GDL 69.
The MX20 I/O option includes additional interface capabilities that allow connection to the ARINC 453
bus for the display of radar, ARINC 429 support for Goodrich SkyWatch interfaces, RS-232 support for
Ryan TCAD, Landmark TAWS8000, and the Honeywell KGP560 and KMH 820 IHAS. The MX20 with
software versions V5.5 and below is intended to be the sole display device for radar sensors. Using
additional display devices may not display the intended information. The MX20 with software version
V5.6 and later may be one of multiple display devices for radar sensors and provides support for the
GWX 68 radar sensor. The GWX 68 must be installed via a separate installation approval.
The MX20 must be connected to an external GPS navigation source, such as the Garmin AT GX or
CNX-series (or GNS 480), to provide route and flight plan information. The MX20 must be connected to
an external serial altitude source to provide terrain awareness information.
Interfacing to a Garmin GTX330 Mode S Transponder provides TIS-A traffic information.
MX20 Installation Manual
Provides an Introduction to the MX20. TSO certification information is also
included in this section.
Includes Installation and Checkout procedures.
Includes complete Specifications.
Includes Limitations information.
Includes Troubleshooting information.
Includes Continued Airworthiness Instructions requirements.
Includes the Environmental Qualification Form.
Includes I/O Specifications.
Includes Equipment Compatibility.
560-1025-09 Rev E
Introduction
1