Engine - High-Pressure Turbine 2nd Stage Blade Assemblies - Inspections
- Published
- Effective
- Deadline
AI-generated summary of the official EASA document. Verify against the PDF before acting.
What to do
Affected operators must perform the required visual, dimensional shadowgraph, and eddy current inspections on the HPT 2nd stage blade and hub assemblies by the effective date. Any assemblies that fail inspections must be removed from service and replaced. Compliance with this directive is mandatory by August 13, 2024, and operators should consult the specified Pratt & Whitney service information for detailed procedures.
Summary
The Federal Register document titled "Engine - High-Pressure Turbine 2nd Stage Blade Assemblies - Inspections" is a final rule airworthiness directive issued by the FAA affecting Pratt & Whitney Model PW2037, PW2037M, and PW2040 engines. It addresses an unsafe condition caused by fractures in the high-pressure turbine 2nd stage turbine hub assembly lugs that led to in-flight shutdowns and fires. The directive mandates inspections and potential replacement of affected turbine hub and blade assemblies.
What changed
This new airworthiness directive introduces mandatory visual, dimensional shadowgraph, and eddy current inspections for the high-pressure turbine 2nd stage blade assemblies and turbine hub assemblies on specified Pratt & Whitney engines. It requires removal and replacement of any parts failing these inspections to mitigate the risk of blade liberation and titanium fires. The directive also clarifies inspection credit and compliance requirements based on service information revisions.
Why it matters
This directive is critical for aviation professionals as it addresses a severe safety risk that can cause engine failure and in-flight shutdowns. Operators and maintenance organizations must ensure compliance to prevent potential catastrophic engine damage and ensure continued airworthiness. The inspections and replacements required will impact maintenance planning, parts inventory, and operational safety protocols.
More for Pratt & Whitney PW2000
All 5- EASA AD US-2021-14-13Engine - High Pressure Turbine Stage 2 Air Seal Assembly - Inspection / ReplacementJul 29, 2021
- EASA AD US-2019-05-01Engine - Diffuser & High Pressure Turbine Case - InspectionMar 13, 2019
- EASA AD US-2018-22-06Engine Fuel & Control - Metering Valve Pilot Valve - Removal / ReplacementOct 30, 2018
- EASA AD US-2018-14-10Fuel Control Turbine Engines - Electronic Engine Control Software - InstallationSep 25, 2018
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