Every article on this site is written by AI from official sources and checked by a second AI. How it works
Proposed ruleComments close Nov. 27, 2026

Airworthiness Directives; CFM International, S.A. Engines

Built by the Tribune's code from the Federal Register. No AI wrote this page. Published in the Federal Register Oct. 27, 2026. Document 2026-21852. Updated Nov. 5, 2026.

Open for public comment until Nov. 27, 2026. Comment on Regulations.gov

What it does

The FAA proposes to adopt a new airworthiness directive (AD) for all CFM International, S.A. (CFM) Model CFM56-7B engines. This proposed AD was prompted by an event involving a CFM Model CFM56-7B26/3 engine where a fan blade separated and resulted in an engine in-flight shutdown (IFSD) with debris penetrating the fuselage, which caused a loss of pressurization and prompted an emergency descent. This proposed AD would require a visual inspection of the fan blades for findings considered not serviceable and, depending on the results of the inspection, replacement with a serviceable part and additional fan blade inspections. This proposed AD would also require sending the inspection results to CFM if any finding considered not serviceable is found. The FAA is proposing this AD to address the unsafe condition on these products.

The Federal Aviation Administration's summary, as published in the Federal Register.

What it would change

1 part of Title 14 of the Code of Federal Regulations:

14 CFR 39

Before this

1075 earlier Federal Register documents under regulation identifier 2120-AA64 since Jan. 1, 2025.

Since then:

What happens next and when

The FAA must receive comments on this proposed AD by November 27, 2026.

The agency's dates, word for word.

Document number2026-21852
ActionNotice of proposed rulemaking (NPRM).
AgenciesTransportation Department; Federal Aviation Administration
PublishedOct. 27, 2026
Comments closeNov. 27, 2026
Regulation identifier (RIN)2120-AA64
DocketFAA-2026-11817

Source: the Federal Register (public domain). The document in the Federal Register