General Information
1-14 560-0982-01 Rev L GNS 480 (CNX80) Installation Manual
1.4 Regulatory Compliance
1.4.1 TSO and Advisory Circular References
• TSO-C34e, ILS Glide Slope Receiving Equipment Operating Within the Radio Frequency Range
of 328.6-335.4 Megahertz (MHz)
• TSO-C36e, Airborne ILS Localizer Receiving Equipment Operating Within the Radio Frequency
Range of 108-112 Megahertz (MHz)
• TSO-C37d, VHF Radio Communications Receiving Equipment Operating Within the Radio
Frequency Range 117.975 to 137.000 Megahertz
• TSO-C38d Class D, VHF Radio Communications Transmitting Equipment Operating Within the
Radio Frequency Range 117.975 to 137.000 Megahertz
• TSO-C40c, VOR Receiving Equipment Operating Within the Radio Frequency Range of 108-
117.95 Megahertz (MHz)
• TSO-C113, Airborne Multipurpose Electronic Displays
• TSO-C128, Devices That Prevent Blocked Channels Used in Two-Way Radio Communications
Due to Unintentional Transmission
• TSO-C146a Class 3, Stand-Alone Airborne Navigation Equipment using the Global Positioning
System (GPS) Augmented by the Wide Area Augmentation System (WAAS)
• AC 20-67B, Airborne VHF Communications Equipment Installations
• AC43.13-1B, Acceptable Methods, Techniques and Practices - Aircraft Inspection and Repair
• AC43.13-2A, Acceptable Methods, Techniques and Practices - Aircraft Alterations
NOTE
Unauthorized changes or modifications to the GNS 480 may void the compliance to
required regulations and authorization for continued equipment usage.
All GNS 480 (CNX80) functions are design approved by TSO, and have airworthiness approval as part of
the initial STC. If additional information (drawing lists and software documentation) is required for
aircraft installation certification, contact Garmin AT Customer Support for assistance.
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