Time Limits / Maintenance Checks — Airworthiness Limitations Section — Amendment
- Published
- Effective
- Deadline
AI-generated summary of the official EASA document. Verify against the PDF before acting.
What to do
Affected operators must revise the Airworthiness Limitations Section of the applicable GEnx-1B and GEnx-2B engine manuals and their approved maintenance or inspection programs to incorporate the reduced life limits for specified parts. Compliance with these revisions is mandatory by November 16, 2022. Operators should also refer to the updated GE service bulletins GE GEnx-1B SB 72-0484 R01 and GE GEnx-2B SB 72-0423 R01 for detailed instructions.
Summary
The Federal Aviation Administration's Airworthiness Directive 2022-20-12 addresses certain General Electric Company GEnx-1B and GEnx-2B model turbofan engines. It responds to the detection of melt-related freckles in forgings and billets that reduce the life of specific compressor discharge pressure seals, interstage seals, high-pressure turbine rotor stage 2 disks, and compressor rotor spools. This directive mandates revisions to the Airworthiness Limitations Section of the applicable engine manuals and operators' maintenance programs to incorporate reduced life limits for these parts.
What changed
This new airworthiness directive introduces reduced life limits for certain life-limited parts in affected GE GEnx-1B and GEnx-2B engines due to manufacturing anomalies. Operators must update the Airworthiness Limitations Section of their engine manuals and maintenance or inspection programs accordingly. The directive also updates references to the latest service bulletins to ensure clarity and accuracy.
Why it matters
This directive is critical for aviation professionals to prevent premature failure of key engine components that could lead to uncontained engine debris and safety risks. Operators and maintenance organizations must comply to maintain airworthiness and avoid potential in-service failures. The updated life limits ensure continued safe operation and regulatory compliance for affected engines.
More for General Electric GEnx
All 24- EASA AD US-2026-14-03Engine - Engine Fuel Distribution - ReplacementAug 10, 2026
- EASA AD US-2026-04-09Turbine Engine - High-Pressure Compressor Stage 5 Blisks - ReplacementMar 5, 2026
- EASA AD US-2025-11-03Engine - High-Pressure Turbine (HPT) Stage 1 and HPT Stage 2 Disks - ReplacementJun 16, 2025
- EASA AD US-2024-25-07Engine - Stages 6-10 Compressor Rotor Spools - InspectionJan 14, 2025
- EASA AD US-2023-17-08Engine - Stages 6—10 Compressor Rotor Spools and Forward Seals - Replacement
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