# Proposed AD FAA-2025-0013: Piaggio Aviation S.p.A. Airplanes

- Type: Proposed airworthiness directive (not in force)
- Status: Became AD 2025-15-10
- Products: Piaggio
- Product type: Aircraft
- Action: Notice of proposed rulemaking (NPRM).
- Published: January 30, 2025, 90 FR 8507
- Comments due: March 17, 2025
- Became: [AD 2025-15-10](https://openairdocs.org/ad/2025-15-10)
- Docket: FAA-2025-0013 (https://www.regulations.gov/docket/FAA-2025-0013, where comments are filed)
- Project: MCAI-2024-00375-A
- FR document: 2025-01968
- Official PDF: https://openairdocs.org/files/sha256/b6/59/b6595f7294789a467bf2a4bdae699dda74f8acb566353430602ab1c9f4533959 (from https://www.govinfo.gov/content/pkg/FR-2025-01-30/pdf/2025-01968.pdf)
- Federal Register: https://www.federalregister.gov/documents/2025/01/30/2025-01968/airworthiness-directives-piaggio-aviation-spa-airplanes
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/FR-ADNPRM-2025-01968-00000000000.0001
- Page: https://openairdocs.org/proposed/FAA-2025-0013

## Summary

The FAA proposes to supersede Airworthiness Directive (AD) 2023-25-03, which applies to certain Piaggio Aviation S.p.A. (Piaggio) Model P-180 airplanes. AD 2023-25-03 requires 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 is 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 proposed AD would retain certain actions of AD-2023-25-03 and would remove the unintended restriction. The FAA is proposing this AD to address the unsafe condition on these products.

## Notices in this docket

- Jan 30, 2025: Notice of proposed rulemaking (NPRM). (first notice), FR document 2025-01968, comments due Mar 17, 2025 (https://www.federalregister.gov/documents/2025/01/30/2025-01968/airworthiness-directives-piaggio-aviation-spa-airplanes)

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