Time Limits / Maintenance Checks — Airworthiness Limitations Section — Amendment
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What to do
Operators must comply with the updated maintenance tasks and life limits specified in the Airworthiness Limitations Section from the effective date of 2023-02-06. They must revise their approved Aircraft Maintenance Programme within 12 months of this date to incorporate the new requirements. Any discrepancies found during inspections must be corrected before further flight, and if existing instructions are insufficient, operators must contact GE Aviation Czech for approved corrective actions.
Summary
EASA Airworthiness Directive 2023-0020 is an amendment addressing time limits and maintenance checks in the Airworthiness Limitations Section for GE Aviation Czech M601 series engines. This directive applies to all serial numbers of M601D, M601E, M601F, M601FS, and M601Z engines, which are installed on various aircraft including the Aircraft Industries L-410 series, Air Tractor AT series, Allied Ag Cat G-164 series, Pacific Aerospace FU-24, and others. The directive mandates compliance with updated maintenance tasks and life limits to ensure continued airworthiness.
What changed
EASA AD 2023-0020 supersedes previous directives 2021-0060 and 2021-0154, partially incorporates requirements from ADs 2021-0125-E and 2021-0264, and introduces new or more restrictive maintenance tasks and life limits as specified in the latest Airworthiness Limitations Section revisions. It expands applicability to all M601 engine models and consolidates related maintenance instructions into a single directive. The directive also includes updated Alert Service Bulletins to assist in determining accumulated life of certain components.
Why it matters
This directive is critical for aviation professionals as it ensures the mandatory maintenance and replacement of life-limited parts on M601 engines, preventing unsafe conditions due to component failure. Operators and maintenance organizations must update their maintenance programs to reflect the latest approved limitations and tasks, ensuring regulatory compliance and continued airworthiness. Failure to comply could lead to grounding of aircraft or unsafe operation.
More for Ge Aviation Czech M601
All 15- EASA AD 2025-0022Engine Fuel & Control — Fuel Control System — Additive ApplicationJan 21, 2025
- EASA AD 2024-0194Engine — Centrifugal Compressor Case — InspectionsOct 15, 2024
- EASA AD 2024-0040-EEngine – Centrifugal Compressor Case – InspectionFeb 8, 2024
- EASA AD 2021-0264R1Engine — Critical Parts — ReplacementMar 28, 2023
- EASA AD 2021-0125R1Engine — Critical Parts — ReplacementJan 30, 2023
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