Engine – Low Pressure Turbine Discs – Inspection
Superseded. Comply with 2026-0117R1, which replaces this document.
- Published
- Effective
- Replaces
- 2020-0195R1
AI-generated summary of the official EASA document. Verify against the PDF before acting.
What to do
Operators must inspect affected low pressure turbine discs before exceeding 7,800 engine flight cycles or within specified compliance times depending on engine configuration. If cracks are detected, parts must be replaced or repaired following Rolls-Royce instructions. Modifications using specified Rolls-Royce service bulletins can terminate repetitive inspections. Installation of affected parts is allowed only if they are serviceable and inspected accordingly.
Summary
EASA Airworthiness Directive 2026-0117 is an airworthiness directive addressing inspection requirements for Rolls-Royce Trent 1000 series engines installed on Boeing 787 aircraft and potentially other types. It mandates inspections of low pressure turbine stage 3 and stage 4 discs, specifically parts with P/N KH36323 and KH33943, to detect cracks caused by rubbing contact with interstage static seals. The directive aims to prevent turbine disc failure and potential damage to the aircraft.
What changed
EASA Airworthiness Directive 2026-0117 supersedes the previous AD 2020-0195R1 and revises inspection criteria, especially for engines modified with Service Bulletin Trent 1000 72-K771. It introduces mandatory repetitive inspections at defined intervals and allows certain repairs as alternatives to part replacement. Additionally, it specifies terminating actions through engine modifications using Rolls-Royce service bulletins.
Why it matters
This directive is critical for aviation professionals to ensure the structural integrity of low pressure turbine discs in Trent 1000 engines, thereby preventing potential in-flight failures and associated safety risks. Operators and maintenance organizations must comply to maintain airworthiness and avoid operational disruptions. Compliance ensures continued safe operation of affected Boeing 787 aircraft equipped with these engines.
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 2025-0206R1Engine — High Pressure Turbine Blades — InspectionDec 18, 2025
- EASA AD 2025-0233Engine — High-Pressure Compressor / Mini-Disc Anti-Rotation Block — Inspection / Modification
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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.