# Airworthiness Directives; International Aero Engines AG Turbofan Engines
> **Rule** · Final rule. · Published 2022-02-08 · Effective 2022-03-15 · 87 FR 7029
## Document
- **Document number:** 2022-02574
- **Category:** airworthiness
- **Manufacturer:** International Aero
- **Type:** Rule
- **Action:** Final rule.
- **Citation:** 87 FR 7029
- **Publication date:** 2022-02-08
- **Effective date:** 2022-03-15
- **FAA docket:** Docket No. FAA-2021-0835
## Abstract

The FAA is superseding Airworthiness Directive (AD) 2021-11-15 for certain International Aero Engines AG (IAE) V2500 model turbofan engines. AD 2021-11-15 required performance of an ultrasonic inspection (USI) of the high-pressure turbine (HPT) 1st-stage disk and HPT 2nd- stage disk and, depending on the results of the inspections, replacement of the HPT 1st-stage disk or HPT 2nd-stage disk. Since the FAA issued AD 2021-11-15, the FAA determined the need to clarify the compliance time for inspection of any HPT 1st-stage disk or HPT 2nd- stage disk that is installed on a low-thrust model engine but had been previously operated on a high-thrust model engine. This AD requires performance of a USI of the HPT 1st-stage disk and HPT 2nd-stage disk and, depending on the results of the inspections, replacement of the HPT 1st-stage disk or HPT 2nd-stage disk. The FAA is issuing this AD to address the unsafe condition on these products.

## Source
- [Federal Register document](https://www.federalregister.gov/documents/2022/02/08/2022-02574/airworthiness-directives-international-aero-engines-ag-turbofan-engines)
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