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United States Department of Transportation United States Department of Transportation

Advisory Circulars (ACs)

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Advisory Circulars (ACs) search results
Number Title Status Office Date
20-188 Compatibility of Changes to Type Design Installed on Aircraft

Previously approved changes include other major or minor changes to type design approved under Title 14 of the Code of Federal Regulations (14 CFR) part 21, Certification Procedures for Products and Parts. Alterations or repairs to aircraft approved pursuant to part 43, Maintenance, Preventive Maintenance, Rebuilding, and Alteration should also be considered.

Active AIR-1 2016-12-09