AD 2020-06-02
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | International | Aero | Airworthiness Directives; International Aero Engines, LLC Turbofan Engines |
Unsafe Condition
Wear and fracture of the turbine piston seal releasing debris that impacted the LPT 3rd-stage blades.
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
Perform initial and repetitive borescope inspections (BSI) of the turbine stator intermediate outer rear air seal (turbine piston seal) and, depending on the results of the inspection, replacement with a part eligible for installation.
AI-generated summary from the source AD text. Verify against the official source before acting.
Compliance Time
Within 15 days on engines operating on extended operations (ETOPS) flights and within 45 days on engines that do not operate on ETOPS flights.
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Affected Aircraft
IAE model turbofan engines with a certain low-pressure turbine (LPT) 3rd-stage blade installed.
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Source: Official FAA Source ↗
Retrieved: Apr 4, 2026
Rights: U.S. Government Public Domain
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