[Correction] Engine — Oil Service Pipe Sealing Rings — Inspection / Replacement / Modification / Rework
- Published
- Effective
- Deadline
- Replaces
- 2018-0199
AI-generated summary of the official EASA document. Verify against the PDF before acting.
What to do
Operators must replace affected sealing rings within specified flight cycle limits or within 100 flight cycles after the effective date, whichever is later, and conduct regular inspections using Rolls-Royce Engine Health Monitoring or manual borescope inspections every 100 flight cycles. Engines must be modified during the next qualified shop visit but no later than 31 December 2027, which terminates repetitive inspection and replacement requirements. Installation of non-serviceable parts is prohibited after modification or for Group 3 engines.
Summary
EASA Airworthiness Directive 2019-0230 is a regulatory document addressing inspection, replacement, modification, and rework of oil service pipe sealing rings on Rolls-Royce Deutschland RB211 Trent 900 engines, commonly installed on Airbus A380 aircraft. The directive targets high pressure/intermediate pressure support structure oil service tube buffer sealing rings with Part Number FW64487 to prevent potential engine failures. It mandates life limits, inspections, and modifications to ensure continued airworthiness and safety.
What changed
This directive supersedes EASA AD 2018-0199 and introduces a modification that serves as a terminating action for repetitive replacements and inspections. It reduces the replacement interval for affected parts on Group 2 engines and adds on-wing borescope inspections for Group 1 and Group 2 engines. The AD also corrects the design approval holder's name and updates compliance requirements accordingly.
Why it matters
This AD is critical for aviation professionals because it addresses a safety risk involving wear and potential cracking of sealing rings that could lead to engine failure and hazardous debris release. Operators and maintenance organizations must comply to prevent in-flight engine damage and ensure regulatory compliance. The directive impacts maintenance planning, parts management, and engine overhaul schedules.
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