Engine – High-Pressure Compressor / Mini-Disc Anti-Rotation Block – Inspection
Superseded. Comply with 2025-0233, which replaces this document.
- Published
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AI-generated summary of the official EASA document. Verify against the PDF before acting.
What to do
Operators must perform borescope inspections within 800 engine flight cycles after 12 July 2024 and repeat them every 800 flight cycles thereafter. If any affected parts are missing or loose, the engine must be removed from service before the next flight and repaired per Rolls-Royce instructions. Alternatively, operators using Rolls-Royce Engine Health Monitoring can comply by following the monitoring criteria and responding promptly to notifications of vibration or anti-rotation plate release.
Summary
EASA Airworthiness Directive 2024-0122 is an airworthiness directive addressing Rolls-Royce Trent 1000 series engines installed on Boeing 787 aircraft. It mandates repetitive borescope inspections of the high-pressure compressor mini-disc anti-rotation block to detect potential part release that could compromise engine safety. The directive applies to Trent 1000-A, AE, C, CE, D, E, G, and H models with specific service bulletins embodied, excluding those with a particular production modification.
What changed
EASA Airworthiness Directive 2024-0122 introduces mandatory repetitive inspections of the high-pressure compressor rear drum cavity and rotor disc cavities using borescope methods or an alternative Rolls-Royce Engine Health Monitoring service. It requires removal and repair of engines if missing or loose parts or foreign objects are found during inspections. This AD does not supersede any previous directives but establishes new inspection and corrective action requirements.
Why it matters
This directive is critical for aviation professionals as it addresses a potential unsafe condition that could lead to structural failure of critical engine components, impacting flight safety. Operators and maintenance organizations must ensure compliance to avoid engine failures and maintain airworthiness. The AD also provides an alternative compliance method through engine health monitoring, offering operational flexibility while ensuring safety.
More for Rolls-Royce Deutschland Ltd & Co Kg TRENT 1000
All 59- EASA PAD 26-114Engine – High Pressure Turbine Blades – InspectionSep 24, 2026
- EASA AD 2026-0117R1Engine – Low Pressure Turbine Discs – InspectionAug 12, 2026
- EASA AD 2026-0143Engine – Intermediate Pressure Compressor Shaft Assembly / Front Air Seal – InspectionJul 20, 2026
- EASA AD 2026-0117Engine – Low Pressure Turbine Discs – InspectionJun 19, 2026
- EASA AD 2025-0206R1Engine — High Pressure Turbine Blades — InspectionDec 18, 2025
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New ADs and bulletins for Rolls-Royce Deutschland Ltd & Co Kg TRENT 1000 and Boeing 787, summarized like this page, every Monday.