Time Limits / Maintenance Checks — Engine Time Limits Manual — Amendment
- Published
- Effective
- Replaces
- G-2003-0005
- Replaces
- 2008-0042
- Replaces
- 2008-0098
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What to do
Operators must replace components before exceeding life limits and perform all maintenance tasks within specified intervals as detailed in the latest Time Limits Manual from 12 March 2025. They must revise their approved Aircraft Maintenance Programme within 12 months to incorporate these updated tasks and limitations. Any discrepancies found during maintenance must be corrected promptly according to Rolls-Royce instructions, and alternative compliance methods may be requested from EASA if justified.
Summary
EASA Airworthiness Directive 2025-0050 is an amendment addressing time limits and maintenance checks for Rolls-Royce RB211 Trent 500 series engines installed on aircraft such as the Airbus A340-500 and A340-600. This directive mandates compliance with the latest Rolls-Royce RB211 Trent 500 engines Time Limits Manual Revision 52 dated 07 February 2025. It ensures continued airworthiness by enforcing updated life limits and maintenance tasks for critical engine parts.
What changed
This amendment supersedes previous directives including UK CAA AD G-2003-0005 and EASA ADs 2008-0042 and 2008-0098, consolidating life limits and maintenance tasks into the latest Time Limits Manual. It introduces new or more restrictive maintenance tasks and life limits for critical engine components, reflecting updated safety assessments. The directive cancels obsolete requirements such as the life limits for Intermediate Pressure Compressor drums.
Why it matters
This directive is crucial for operators and maintenance organizations to ensure compliance with mandatory airworthiness limitations, preventing unsafe conditions caused by potential failure of rotating engine parts. It harmonizes maintenance requirements under EU regulations, reducing the risk of engine failures and enhancing flight safety. Compliance ensures continued legal operation of affected aircraft and engines under European aviation regulations.
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