Aircraft Certification Service (AIR) Draft Advisory Circulars (ACs) Open for Comment
| Document Title: | AC 25-19B, Certification Maintenance Requirements |
|---|---|
| Summary: | This advisory circular (AC) describes an acceptable means for obtaining Federal Aviation Administration (FAA) airworthiness approval for certification maintenance requirements (CMRs). It includes the selection, documentation, control, and management of CMRs. This AC also provides a method for coordinating these CMRs under a maintenance review board (MRB), if an MRB is convened. |
| Documents for Download: | Draft Document Comment Matrix |
| Comments Due: | May 25, 2026 |
| How to Comment: | Email Comments to: Sekhar.Vaidyanath@faa.gov |
| Document Title: | AC 20-170A, Integrated Modular Avionics (IMA) |
|---|---|
| Summary: | This advisory circular (AC) provides guidance for demonstrating compliance with applicable airworthiness requirements for integrated modular avionics (IMA) systems installed in a product, part, or appliance. |
| Documents for Download: | Draft Document Comment Matrix |
| Comments Due: | May 29, 2026 |
| How to Comment: | Email Comments to: Jaime.O.Valdivia@faa.gov and 9-AVS-TechWriters@FAA.gov |
Related Information
- Final Aircraft Certification advisory circulars, other policy documents, and technical standard orders (TSOs) are available on FAA's Dynamic Regulatory System (DRS)
- Advisory Circulars (ACs)
- FAA Regulations
- Orders & Notices
- Policy & Guidance
- To comment on rulemaking documents, please visit the DOT Docket Management System.
Last updated: Thursday, May 14, 2026