EASA AD 2018-0167R2
SUPERSEDED BY EASA AD 2019-0075
Summary
EASA Airworthiness Directive 2018-0167R2 is an updated safety directive addressing inspection requirements for Rolls-Royce Trent 1000 series engines installed on Boeing 787 aircraft. It mandates repetitive borescope inspections of Intermediate Pressure Compressor (IPC) Rotor 1 and Rotor 2 blades and IPC shaft Stage 2 dovetail posts to detect cracks and prevent potential in-flight blade release. The directive applies to all serial numbers of Trent 1000-A, -AE, -C, -CE, -D, -E, -G, and -H engines.
What Changed
This revision introduces repetitive on-wing borescope inspections for affected IPC components and adds specific inspection requirements following asymmetric power operations. It also provides an alternative in-shop inspection method and clarifies engine flight cycle counting for compliance. The directive supersedes previous versions and retains prior inspection and corrective action requirements while enhancing fleet-wide safety measures.
Why It Matters
This directive is critical for operators and maintenance organizations to ensure the structural integrity of IPC blades and shafts in Trent 1000 engines, preventing possible in-flight failures that could compromise aircraft control. Compliance helps maintain airworthiness and reduces the risk of unscheduled engine removals or incidents. It also provides clear guidance on inspection intervals and corrective actions, aiding regulatory compliance and operational safety.
What To Do
Operators must perform initial and repetitive borescope inspections of IPC Rotor 1 and Rotor 2 blades and IPC shaft Stage 2 dovetail posts within specified engine flight cycle thresholds or within 15 to 45 days after 11 August 2018, whichever is later. Inspections must also be conducted after any asymmetric power operation before the next flight. If cracks or discrepancies are found, engines must be removed from service and repaired per Rolls-Royce approved instructions. In-shop inspections can substitute on-wing inspections if performed within required intervals.
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