# Proposed AD FAA-2026-7240: Rolls-Royce Deutschland Ltd & Co KG Engines

- Type: Proposed airworthiness directive (not in force)
- Status: Comment period closed
- Products: Rolls-Royce Deutschland Trent 1000-A, Trent 1000-AE, Trent 1000-C, Trent 1000-CE, Trent 1000-D, Trent 1000-E, Trent 1000-G and Trent 1000-H
- Product type: Engine
- Action: Notice of proposed rulemaking (NPRM).
- Published: August 13, 2026, 91 FR 52263
- Comments due: September 28, 2026
- Docket: FAA-2026-7240 (https://www.regulations.gov/docket/FAA-2026-7240, where comments are filed)
- Project: MCAI-2025-01635-E
- FR document: 2026-16502
- Official PDF: https://openairdocs.org/files/sha256/2f/d7/2fd7a4e65699d7ed2ad9eab237460cbb5baf74ad6c04cd6c8c01e2d6617b6565 (from https://www.govinfo.gov/content/pkg/FR-2026-08-13/pdf/2026-16502.pdf)
- Federal Register: https://www.federalregister.gov/documents/2026/08/13/2026-16502/airworthiness-directives-rolls-royce-deutschland-ltd-and-co-kg-engines
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/FR-ADNPRM-2026-16502-00000000000.0001
- Page: https://openairdocs.org/proposed/FAA-2026-7240

## Summary

The FAA proposes to supersede Airworthiness Directive (AD) 2025-26-03, which applies to certain Rolls-Royce Deutschland Ltd & Co KG (RRD) Model Trent 1000-A, Trent 1000-AE, Trent 1000-C, Trent 1000- CE, Trent 1000-D, Trent 1000-E, Trent 1000-G, and Trent 1000-H engines. AD 2025-26-03 requires repetitive borescope inspections (BSIs) of the high-pressure compressor (HPC) rear drum cavity and cavities between each HPC rotor disc, and depending on the results of inspection, removal of the engine from service. AD 2025-26-03 also allows an alternative method of complying with the repetitive BSIs if certain actions are accomplished. Since the FAA issued AD 2025-26-03, RRD published updated service material with a revised bolting arrangement at the HPC rotor shaft to high-pressure turbine (HPT) rotor disc interface to address the unsafe condition. This proposed AD would require repetitive BSIs of the HPC rear drum cavity and cavities between each HPC rotor disc, and depending on the results of inspection, removal of the engine from service. This proposed AD would also allow an alternative method of complying with BSIs if certain actions are accomplished, and require modification of the bolting arrangement as a terminating action for the repetitive BSIs. The FAA is proposing this AD to address the unsafe condition on these products.

## Notices in this docket

- Aug 13, 2026: Notice of proposed rulemaking (NPRM). (first notice), FR document 2026-16502, comments due Sep 28, 2026 (https://www.federalregister.gov/documents/2026/08/13/2026-16502/airworthiness-directives-rolls-royce-deutschland-ltd-and-co-kg-engines)

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