Aircraft Certification Service (AIR) Draft Technical Standard Orders (TSOs) Open for Comment

Document Title: TSO-C159F, Next Generation Satellite Systems (NGSS) Equipment
Summary: This technical standard order (TSO) is for manufacturers applying for a TSO authorization (TSOA) or letter of TSO design approval (LODA). In it, we (the Federal Aviation Administration, (FAA)) tell you what minimum performance standards (MPS) your Next Generation Satellite Systems (NGSS) equipment must meet for approval and identification with the applicable TSO marking.
Documents for Download:  Draft Document
Comment Matrix
Comments Due: April 29, 2026
How to Comment: Email comments to:
9-AVS-TechWriters@faa.gov

To comment by mail:
Federal Aviation Administration
C/O Judith Watson
800 Independence Avenue, SW
Washington, DC 20591

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Last updated: Monday, March 16, 2026