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

**Action Urgency Score:** 20/100

| Field | Value |
|---|---|
| Agency | Transportation Department; Federal Aviation Administration |
| Type | Proposed rule |
| Action | Notice of proposed rulemaking (NPRM). |
| Published | 2026-08-13 |
| Comments close | 2026-09-28 |
| Significant | No |
| CFR parts | 14 CFR 39 |
| 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  |
| Document number | 2026-16502 |

## Why this score


Source: Federal Register API (Office of the Federal Register) (https://www.federalregister.gov/documents/2026/08/13/2026-16502/airworthiness-directives-rolls-royce-deutschland-ltd-and-co-kg-engines). Last refreshed: 2026-11-04T21:40:49.974Z.
Data from the Federal Register API; the published Federal Register document is authoritative. Informational only, not legal advice.