Engine – Removal / De-Pairing
Superseded. Comply with 2018-0086, which replaces this document.
- Published
- Effective
- Deadline
AI-generated summary of the official EASA document. Verify against the PDF before acting.
What to do
Operators must remove one of two affected Trent 1000 engines installed on an aircraft before either engine exceeds its IPTB cyclic limit or within 20 flight cycles after 2017-12-22, whichever is later. Removed engines must not be reinstalled except under specified limitations. Modification of engines according to Rolls-Royce Service Bulletin 72-H818 will end these restrictions for that engine.
Summary
EASA Airworthiness Directive 2017-0253-E is an emergency directive addressing safety concerns with Rolls-Royce Trent 1000 engines installed on Boeing 787 aircraft. It targets specific engine serial numbers susceptible to intermediate pressure turbine blade (IPTB) corrosion cracking that could lead to in-flight shut-downs. The directive mandates operational restrictions and maintenance actions to mitigate this risk.
What changed
This directive introduces a requirement to de-pair certain affected Trent 1000 engines by removing one engine from service before exceeding cyclic life limits or within 20 flight cycles from the effective date. It also prohibits reinstalling removed engines without specific limitations and establishes that modification per Rolls-Royce Service Bulletin 72-H818 terminates these requirements. This AD is an interim measure pending further regulatory action.
Why it matters
This directive is critical for aviation professionals as it addresses a safety risk that could cause dual engine in-flight shut-downs, impacting flight safety and operational reliability. Operators and maintenance organizations must ensure compliance to avoid unsafe engine configurations and potential regulatory penalties. It also affects engine pairing strategies and maintenance planning for Boeing 787 fleets equipped with Trent 1000 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 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.