# Airworthiness Directives; Piaggio Aviation S.p.A. Airplanes
> **Rule** · Final rule. · Published 2025-07-30 · Effective 2025-09-03 · 90 FR 35831
## Document
- **Document number:** 2025-14390
- **Category:** airworthiness
- **Manufacturer:** Piaggio Aviation S.p.A.
- **Type:** Rule
- **Action:** Final rule.
- **Citation:** 90 FR 35831
- **Publication date:** 2025-07-30
- **Effective date:** 2025-09-03
- **FAA docket:** Docket No. FAA-2025-0013
## Abstract

The FAA is superseding Airworthiness Directive (AD) 2023-25- 03, which applied to certain Piaggio Aviation S.p.A. (Piaggio) Model P- 180 airplanes. AD 2023-25-03 required a one-time detailed inspection of the horizontal stabilizer (HS) central box for corrosion; an assessment of the corrosion level; and depending on the determination, repetitive detailed inspections of the HS central box for corrosion and the internal composite structure for surface cracks, distortion, and damage; and repair or replacement of the HS assembly. Repair or replacement of the HS assembly was terminating action for the repetitive inspections. Since the FAA issued AD 2023-25-03, it was determined that AD 2023-25-03 imposed an unintended restriction that is not in the mandatory continuing airworthiness information (MCAI). This AD retains certain actions of AD-2023-25-03 and removes the unintended restriction. The FAA is issuing this AD to address the unsafe condition on these products.

## Source
- [Federal Register document](https://www.federalregister.gov/documents/2025/07/30/2025-14390/airworthiness-directives-piaggio-aviation-spa-airplanes)
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