Airworthiness Directives; Rolls-Royce Deutschland Ltd & Co KG Engines

Built by the Tribune's code from the Federal Register. No AI wrote this page. Published in the Federal Register July 23, 2026. Document 2026-14882. Updated Nov. 8, 2026.

What it does

The FAA proposes to supersede Airworthiness Directive (AD) 2023-12-16, which applies to certain Rolls-Royce Deutschland Ltd & Co KG (RRD) Model Trent 1000 engines. AD 2023-12-16 requires an inspection of the high-pressure turbine (HPT) triple seal for excessive wear and, depending on the results of the inspection, replacement of the HPT triple seal and the intermediate-pressure turbine (IPT) disk. Since the FAA issued AD 2023-12-16, the manufacturer has developed a modification that removes the need for the inspection of the HPT triple seal. This proposed AD would continue to require an inspection of the HPT triple seal for excessive wear and, depending on the results of the inspection, replacement of the HPT triple seal and IPT disk. This proposed AD would remove certain engine serial numbers from the applicability of the existing AD. 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

909 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 NPRM by September 8, 2026.

The agency's dates, word for word.

Check it yourself

The record as published

Document number	2026-14882
Action	Notice of proposed rulemaking (NPRM).
Agencies	Transportation Department; Federal Aviation Administration
Published	July 23, 2026
Comments close	Sept. 8, 2026
Regulation identifier (RIN)	2120-AA64
Docket	FAA-2026-7225

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