# Airworthiness Directives; International Aero Engines AG (IAE) Turbofan Engines
> **Rule** · Final rule; request for comments. · Published 2020-04-13 · Effective 2020-04-28 · 85 FR 20402
## Document
- **Document number:** 2020-07627
- **Category:** airworthiness
- **Manufacturer:** International Aero
- **Type:** Rule
- **Action:** Final rule; request for comments.
- **Citation:** 85 FR 20402
- **Publication date:** 2020-04-13
- **Effective date:** 2020-04-28
- **FAA docket:** Docket No. FAA-2020-0314
## Abstract

The FAA is adopting a new airworthiness directive (AD) for certain International Aero Engines AG (IAE) V2522-A5, V2524-A5, V2525- D5, V2527-A5, V2527E-A5, V2527M-A5, V2528-D5, V2530-A5, and V2533-A5 model turbofan engines. This emergency AD was sent previously to all known U.S. owners and operators of these engines. This AD requires removal of affected high-pressure turbine (HPT) 1st-stage disks from service. This AD was prompted by investigative findings from an event involving an uncontained failure of a HPT 1st-stage disk that resulted in high-energy debris penetrating the engine cowling. The FAA is issuing this AD to address the unsafe condition on these products.

## Source
- [Federal Register document](https://www.federalregister.gov/documents/2020/04/13/2020-07627/airworthiness-directives-international-aero-engines-ag-iae-turbofan-engines)
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