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United States Department of Transportation United States Department of Transportation

AC 20-182A - Airworthiness Approval for Aircraft Weather Radar Systems

Document Information

Number
20-182A
Title
Airworthiness Approval for Aircraft Weather Radar Systems
Status
Active
Date issued
2016-10-01
Office of Primary Responsibility
AIR-130, Aviation Safety - Aircraft Certification Service, Aircraft Engineering Division
Description
This advisory circular (AC) provides guidance for the initial and follow-on airworthiness approval of aircraft weather radar systems meeting the latest revision of the Technical Standard Order (TSO)-C63, Airborne Weather Radar Equipment. This AC covers aircraft radar systems with weather detection and ground mapping, forward-looking windshear detection, forward looking turbulence detection, and atmospheric threat awareness capability. The guidance is applicable to Title 14 of the Code of Federal Regulations, parts 23, 25, 27, and 29 aircraft. For forward-looking windshear and/or turbulence detection capability, the guidance in this AC applies to parts 25 and 23 fixed-wing airplane installations. This AC is not mandatory and does not constitute a regulation. This AC describes an acceptable means, but not the only means, of accomplishing airworthiness approval for the installation of airborne weather radar equipment. However, if you use the means described in the AC, you must follow it in all important respects. Appendix A provides additional guidance on the forward-looking windshear system annunciation, alert, and display icons. A list of related documents can be found in Appendix B of this AC. This AC provides guidance intended for new approvals. This AC is not intended to modify, change, or cancel existing equipment design or airworthiness approvals. Equipment with existing approvals can continue to be installed within the provisions of its original design and airworthiness certification.
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