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AC 20-138D

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Advisory circular · Airworthiness Approval of Positioning and Navigation Systems

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Approved
March 28, 2014
Last reviewed
June 28, 2017
Cancels
AC20-138CAC20-130AAC20-129
Family
AC 20-138 · 5 versions
Revision
D
14 CFR parts
1, 3, 11, 14, 15, 16, 21, 23, 25, 27, 29, 43, 91, 97, 121, 125, 135
14 CFR sections
§ 3.2§ 3.4§ 3.7§ 14.5§ 15.5§ 21.16§ 21.101§ 21.611§ 21.619§ 25.131§ 25.137§ 43.3§ 91.171§ 91.175§ 91.227§ 121.351§ 125.203§ 135.165

Guidance, not mandatory unless a rule or AD requires it. DRS record last changed October 23, 2026.

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Appendix 10

s. RTCA/DO-316, Minimum Operational Performance Standards for Global Positioning System/Aircraft-Based Augmentation System Airborne Equipment.

A10-4. Other Documents.

a. ARINC Specification 424-19, Navigation Systems Database, December 19, 2008.

Copies of this document may be requested from Aeronautical Radio Inc., 2551 Riva Road, Annapolis, Md. 21401-7435.

b. The FAA and Industry Guide to Product Certification, September 2004. Copies of this document may be obtained at:

http://www.faa.gov/aircraft/air_cert/design_approvals/media/CPI_guide_II.pdf.

c. GPS Standard Positioning Service Performance Standard, 4th edition, September, 2008. Copies of this document and general information related to GPS may be requested at http://pnt.gov/public/docs/2008/spsps2008.pdf.

d. Department of Defense IS-GPS-200D, Navstar GPS Space Segment/Navigation User Interface. Copies of this document may be requested from the GPS Joint Program Office, SSD/CZ, Los Angeles AFB, CA 90006. Alternatively, copies of this document may be requested at http://www.navcen.uscg.gov/gps/geninfo/default.htm.

e. FAA Specification Wide Area Augmentation System (WAAS), FAA-E-2892C, July 29, 2009. This document is available on-line at http://www.faa.gov/about/office_org/headquarters_offices/ato/service_units/techops/navservices/ gnss/library/documents/.

A10-5. How to Get Related Documents.

a. Order copies of 14 CFR parts from the Superintendent of Documents, Government Printing Office (GPO), P.O. Box 979050, St. Louis, MO 63197. For general information, telephone (202) 512-1800 or fax (202) 512-2250. You can also get copies online at the GPO electronic CFR Internet website at www.gpoaccess.gov/cfr/.

b. Order copies of RTCA documents from RTCA Inc., 1828 L Street NW, Suite 805, Washington, D.C. 20036-4007. For general information, telephone (202) 833-9339 or fax (202) 833-9434. You can also order copies online at www.rtca.org.

c. You can find copies of ACs on the FAA website at http://www.faa.gov/regulations_policies/advisory_circulars/, or www.airweb.faa.gov/rgl.

d. You can find a current list of technical standard orders on the FAA Regulatory and Guidance Library at www.airweb.faa.gov/rgl. You will also find the TSO Index of Articles on the same site.

A10-6