Engine — High Pressure Turbine Stage 1 Discs — Life Limit Reduction / Replacement
- Published
- Effective
- Deadline
AI-generated summary of the official EASA document. Verify against the PDF before acting.
What to do
Operators must check within 30 days of 2019-12-24 whether affected high pressure turbine stage 1 discs are installed by reviewing maintenance records. Engines with affected parts must have those parts replaced before exceeding specified flight cycles, with deadlines ranging from 2021-02-28 to 2029-05-01 depending on flight cycle accumulation. Installation of only serviceable parts is permitted from the effective date onward.
Summary
EASA Airworthiness Directive 2019-0299 is an airworthiness directive addressing Rolls-Royce Deutschland BR700-710A1-10, BR700-710A2-20, and BR700-710C4-11 engines installed on aircraft such as Bombardier BD-700-1A10, BD-700-1A11, Gulfstream G500, and G550. The directive focuses on reducing the life limit and requiring replacement of certain high pressure turbine stage 1 discs due to a manufacturing quality issue. It mandates identification and removal of affected parts to ensure continued airworthiness and safety.
What changed
This new directive introduces a reduction in the declared safe cyclic life for affected high pressure turbine stage 1 discs and requires operators to identify and replace these parts within specified flight cycle limits. It prohibits the installation of any affected parts after the effective date and provides instructions for compliance through a Rolls-Royce Deutschland service bulletin.
Why it matters
This directive is critical for aviation professionals because it addresses a potential safety risk from turbine disc failure that could lead to high-energy debris release and possible aircraft damage or loss of control. Operators and maintenance organizations must ensure timely compliance to avoid unsafe conditions and regulatory non-compliance. It also impacts inventory management by restricting the use of affected parts.
More for Rolls-Royce Deutschland Ltd & Co Kg BR700-710
All 8- EASA AD 2024-0136Time Limits / Maintenance Checks — Time Limits Manual / Maintenance Programme — AmendmentJul 11, 2024
- EASA AD 2022-0110R1Engine — Low Pressure Compressor Rotor (Fan) Disc — InspectionNov 22, 2023
- EASA SIB 2022-04High Pressure Compressor Abradable Liner LossMay 25, 2022
- EASA AD 2022-0033Time Limits / Maintenance Checks — Time Limits Manual / Maintenance Programme — AmendmentMar 3, 2022
- EASA AD 2017-0198-CN
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