Data / Federal rules / 2026-14882
Airworthiness Directives; Rolls-Royce Deutschland Ltd & Co KG Engines
The Federal Aviation Administration published this proposed rule in the Federal Register on July 23, 2026. Comments closed on September 8, 2026.
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What the agency says
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.
Key facts
- Document number
- 2026-14882
- Type
- Proposed rule
- Action
- Notice of proposed rulemaking (NPRM)
- Agency
- Transportation Department; Federal Aviation Administration
- Published
- July 23, 2026
- Comments due
- September 8, 2026
- Dates
- The FAA must receive comments on this NPRM by September 8, 2026.
- Docket
- Docket No. FAA-2026-7225; Project Identifier MCAI-2023-01036-E
- Regulation ID (RIN)
- 2120-AA64
- Code of Federal Regulations
- 14 CFR 39
- Topics
- Air transportation; Aircraft; Aviation safety; Incorporation by reference; Safety
- Pages
- 4
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Everything from the Federal Aviation Administration · Rules on air transportation · Rules on aircraft · Rules on aviation safety · Published in July 2026
Read from the Federal Register API, last updated 2026-10-23. The document on federalregister.gov is the official record; dates and dockets can change through later corrections. Free to reuse with credit to SpecStream under CC BY 4.0.