Engine — High-Pressure Turbine Inner Stationary Seal — Inspection
- Published
- Effective
- Deadline
- Replaces
- 2020-0044
AI-generated summary of the official EASA document. Verify against the PDF before acting.
What to do
Operators must inspect affected HPT inner stationary seals during the next engine shop visit after the effective dates specified for their engine group. If honeycomb separation is found, corrective actions including seal replacement and related component replacements must be performed before engine release. Installation of affected seals is prohibited after corrective actions or from the AD effective date for unaffected engines. The effective date for compliance is 18 January 2024.
Summary
EASA Airworthiness Directive 2024-0002 is an airworthiness directive addressing the inspection of the high-pressure turbine (HPT) inner stationary seal on CFM International CFM56-5B, CFM56-5C, and CFM56-7B engines. These engines are commonly installed on Airbus A318, A319, A320, A321, A340, and Boeing 737-600 through 737-900ER series aircraft. The directive mandates inspections and corrective actions to prevent potential damage caused by cracks and honeycomb separation in the affected seals.
What changed
EASA Airworthiness Directive 2024-0002 supersedes the previous AD 2020-0044 and expands the inspection requirements to include an additional batch of HPT inner stationary seals that had honeycomb replacements between 2006 and 2012. It clarifies that only seals with repairs after 31 December 2012 are not affected and requires inspections during the next engine shop visit for these newly identified seals.
Why it matters
This directive is critical for aviation professionals as it addresses a potential unsafe condition that could lead to uncontained engine failures, risking damage to the engine and aircraft. Operators and maintenance organizations must ensure compliance to maintain aircraft airworthiness and safety. The expanded inspection scope helps prevent in-service failures by identifying and correcting affected seals before further damage occurs.
More for CFM International CFM56-5B
All 9- EASA PAD 26-113Engine – High Pressure Turbine Front Seal – InspectionSep 23, 2026
- EASA AD 2026-0033Engine — High-Pressure Turbine Inner Stationary Seal — InspectionFeb 20, 2026
- EASA AD 2024-0067-EEngine — Life Limited Parts — ReplacementMar 9, 2024
- EASA AD 2021-0062Engine — Low Pressure Turbine Rear Frames — Inspection / ReplacementMar 5, 2021
- EASA AD 2020-0044Engine – High-Pressure Turbine Inner Stationary Seal – InspectionMar 3, 2020
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