EASA AD 2019-0250
SUPERSEDED BY EASA AD 2020-0240
Summary
EASA Airworthiness Directive 2019-0250 is issued for Rolls-Royce Deutschland Trent 1000 series engines installed on Boeing 787 aircraft. It mandates repetitive inspections of intermediate pressure compressor (IPC) Rotor 1 and Rotor 2 blades and shaft assemblies to detect cracks that could lead to in-flight blade release. The directive updates inspection procedures and intervals to enhance engine safety.
What Changed
This directive introduces new inspection requirements replacing those in EASA AD 2018-0084R2, including updated inspection thresholds, intervals, and procedures applicable to all operations, not limited to ETOPS. It removes references to Engine Health Monitoring messages and ETOPS-specific requirements, and adds inspections triggered by asymmetric power operations and cabin depressurisation events.
Why It Matters
Compliance with EASA AD 2019-0250 is critical for operators and maintenance organizations to prevent potential engine failures caused by cracked IPC blades. The updated inspections ensure early detection of damage, reducing the risk of in-flight engine issues and enhancing overall flight safety. Maintenance teams must adapt to the revised inspection schedules and reporting requirements to maintain airworthiness.
What To Do
Operators must perform repetitive borescope inspections of affected IPC Rotor 1 and Rotor 2 parts before exceeding specified thresholds and at intervals defined in Rolls-Royce service bulletins. Inspections are also required within five flight cycles after asymmetric power events or cabin depressurisation. Any crack indications must be addressed by removing the engine from service and following Rolls-Royce approved corrective actions. Inspection results must be reported to Rolls-Royce within 30 days.
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