EASA AD 2016-0193R1
Engine — Low Pressure Turbine Exhaust Case and Support Assembly (Tail Bearing Housing) — Inspection / Replacement
Summary
EASA Airworthiness Directive 2016-0193R1 is an updated regulatory document addressing inspection and replacement requirements for the Low Pressure Turbine Exhaust Case and Support Assembly (Tail Bearing Housing) on Rolls-Royce RB211 Trent 900 engines, commonly installed on Airbus A380 aircraft. The directive mandates inspections to detect cracks and damage in specific turbine components and outlines corrective actions to ensure continued airworthiness.
What Changed
This revision removes all requirements related to Rolls-Royce Alert Non-Modification Service Bulletin RB.211-72-AH154, transferring its inspection instructions into the Trent 900 Time Limits Manual as per EASA AD 2018-0048. It also updates inspection criteria and retains certain inspection requirements while deleting previously imposed life limits on the Tail Bearing Housing.
Why It Matters
The directive is critical for aviation professionals to prevent potential structural failures of the Tail Bearing Housing that could compromise engine integrity and aircraft control. Operators and maintenance organizations must follow updated inspection regimes and corrective actions to maintain compliance and ensure flight safety. The changes streamline inspection processes and clarify acceptable repair criteria, impacting maintenance planning and resource allocation.
What To Do
Affected operators must perform on-wing and in-shop inspections of the Tail Bearing Housing according to specified Rolls-Royce Alert Non-Modification Service Bulletins within the compliance times detailed in the directive's appendices. Any detected cracks require immediate corrective actions, including engine removal or part replacement. Modification of engines with Rolls-Royce Service Bulletin RB.211-72-J055 is an optional terminating action that eliminates repetitive inspections.
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