Transportation Department, Federal Aviation Administration
The FAA is adopting a new airworthiness directive (AD) for all Airbus SAS Model A319 series airplanes; Model A320 series airplanes; and Model A321-111, -112, -131, -211, -212, -213, -231, -232, -251N, - 252N, -253N, -271N, -272N, -251NX, -252NX, -253NX, -271NX, and -272NX airplanes. This AD was prompted by aeroelastic stability assessments that indicate that reduced stability margins may exist due to accumulation of additional mass from rudder repainting or repairs. This AD requires airframe vibration troubleshooting after an airframe vibration event, reporting results, and applicable on-condition actions. The FAA is issuing this AD to address the unsafe condition on these products.
Document Headings Document headings vary by document type but may contain the following: the agency or agencies that issued and signed a document the number of the CFR title and the number of each part the document amends, proposes to amend, or is directly related to the agency docket number / agency internal file number the RIN which identifies each regulatory action listed in the Unified Agenda of Federal Regulatory and Deregulatory Actions See the Document Drafting Handbook for more details. Department of Transportation Federal Aviation Administration 14 CFR Part 39 [Docket No. FAA-2026-4645; Project Identifier MCAI-2026-00451-T; Amendment 39-23365; AD 2026-11-04] RIN 2120-AA64 AGENCY: Federal Aviation Administration (FAA), DOT. ( printed page 31890) ACTION: Final rule; request for comments. SUMMARY: The FAA is adopting a new airworthiness directive (AD) for all Airbus SAS Model A319 series airplanes; Model A320 series airplanes; and Model A321-111, -112, -131, -211, -212, -213, -231, -232, -251N, -252N, -253N, -271N, -272N, -251NX, -252NX, -253NX, -271NX, and -272NX airplanes. This AD was prompted by aeroelastic stability assessments that indicate that reduced stability margins may exist due to accumulation of additional mass from rudder repainting or repairs. This AD requires airframe vibration troubleshooting after an airframe vibration event, reporting results, and applicable on-condition actions. The FAA is issuing this AD to address the unsafe condition on these products. DATES: This AD is effective June 15, 2026. The Director of the Federal Register approved the incorporation by reference of a certain publication listed in this AD as of June 15, 2026. The FAA must receive comments on this AD by July 13, 2026. ADDRESSES: You may send comments, using the procedures found in 14 CFR 11.43 and 11.45 , by any of the following methods: Federal eRulemaking Portal: Go to regulations.gov . Follow the instructions for submitting comments. Fax: 202-493-2251. Mail: U.S…
Citation: 91 FR 31889
