Engine – High Pressure Turbine Blades – Inspection / De-Pairing Limitation
Superseded. Comply with 2024-0118R1, which replaces this document.
- Published
- Effective
- Deadline
- Replaces
- 2019-0099R1
AI-generated summary of the official EASA document. Verify against the PDF before acting.
What to do
Operators must perform on-wing borescope inspections of affected HPT blades before exceeding specified flight cycle thresholds and then every 50 flight cycles thereafter. Engines accumulating 1,000 or more flight cycles or combined engine flight cycles exceeding 1,400 must be removed from service and have affected parts replaced with new blades per Rolls-Royce service instructions. Inspections must also be conducted within 10 flight cycles after any in-flight shutdown event.
Summary
EASA Airworthiness Directive 2019-0099R2 is an updated safety directive addressing the inspection and operational limitations of Rolls-Royce Trent 1000 series engines installed on Boeing 787 aircraft. It focuses on high pressure turbine (HPT) blades with specific part numbers KH10575 and KH64485, requiring repetitive borescope inspections to detect axial cracking and imposing flight cycle limits to prevent engine failure. This directive aims to mitigate risks of in-flight engine shutdown due to blade deterioration.
What changed
EASA Airworthiness Directive 2019-0099R2 revises the previous version 2019-0099R1 by correcting the definition of 'serviceable part' to specify that only new blades installed in-shop are acceptable replacements. It deletes references to used parts that passed inspection and maintains the inspection intervals and operational limitations. This revision is considered an interim action pending further directives.
Why it matters
This directive is critical for aviation professionals as it ensures continued airworthiness and safety of Boeing 787 aircraft powered by Trent 1000 engines by preventing potential high pressure turbine blade failures. Operators and maintenance organizations must comply with inspection and replacement requirements to avoid in-flight engine shutdowns, which could compromise flight safety and operational reliability. Compliance also ensures adherence to European Union aviation safety regulations.
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.