Engine — High Pressure Turbine Seal — Inspection
- Published
- Effective
- Deadline
- Replaces
- 2022-0241
AI-generated summary of the official EASA document. Verify against the PDF before acting.
What to do
Operators must perform a one-time inspection of the high pressure turbine triple seals during the next qualified engine shop visit after 21 December 2022, following the instructions in the Rolls-Royce NMSB 72-AK711. If wear exceeds defined limits, the affected seal and intermediate pressure turbine disc must be replaced before engine release to service. Inspection results must be reported to Rolls-Royce within 30 days of inspection or by 21 January 2023, whichever is later.
Summary
EASA Airworthiness Directive 2022-0241R1 is an updated directive addressing inspection requirements for the high pressure turbine triple seals, Part Number FW34485, on Rolls-Royce Trent 1000 engines installed on Boeing 787 aircraft. The directive mandates inspection and possible replacement of affected parts to prevent turbine disc failure due to excessive seal wear. It applies to Trent 1000 engine models AE3 through R3 with serial numbers up to 11499, excluding engines modified with Rolls-Royce mod 75-K778.
What changed
This revision reduces the applicability of the original AD 2022-0241 by excluding engines that have incorporated Rolls-Royce modification 75-K778, which eliminates the need for the mandated inspection. The updated directive references the latest revision of the Rolls-Royce Alert Non-Modification Service Bulletin TRENT 1000 72-AK711 and clarifies inspection and reporting requirements.
Why it matters
The directive is critical for aviation professionals to ensure the continued airworthiness of affected Trent 1000 engines by detecting and addressing excessive wear on high pressure turbine seals. Failure to comply could lead to turbine disc overheating and potential failure, posing safety risks and operational disruptions. Operators and maintenance organizations must integrate these inspection and corrective actions into their maintenance programs to maintain regulatory compliance and flight 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.