# 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 | 2026-08-20 |
| Comments close | 2026-10-05 |
| Significant | No |
| CFR parts | 14 CFR 39 |
| Summary | The FAA proposes to supersede Airworthiness Directive (AD) 2022-11-15, which applies to all Rolls-Royce Deutschland Ltd & Co KG (RRD) Model Trent7000-72 and Trent7000-72C engines. AD 2022-11-15 requires initial and repetitive on-wing borescope inspections (BSIs) of the high-pressure turbine (HPT) blades to detect axial cracking and, depending on the results of the inspections, replacement of the HPT blade set. Since the FAA issued AD 2022-11-15, RRD issued updated service material providing improved instructions for inspection of the HPT blades, removing the reduced life limit for affected HPT |
| Document number | 2026-16956 |

## Why this score


Source: Federal Register API (Office of the Federal Register) (https://www.federalregister.gov/documents/2026/08/20/2026-16956/airworthiness-directives-rolls-royce-deutschland-ltd-and-co-kg-engines). Last refreshed: 2026-11-04T09:17:43.641Z.
Data from the Federal Register API; the published Federal Register document is authoritative. Informational only, not legal advice.