# Proposed AD FAA-2023-1819: Piaggio Aviation S.p.A. Airplanes

- Type: Proposed airworthiness directive (not in force)
- Status: Became AD 2023-25-03
- Products: Piaggio
- Product type: Aircraft
- Action: Notice of proposed rulemaking (NPRM).
- Published: September 7, 2023, 88 FR 61482
- Comments due: October 23, 2023
- Became: [AD 2023-25-03](https://openairdocs.org/ad/2023-25-03)
- Docket: FAA-2023-1819 (https://www.regulations.gov/docket/FAA-2023-1819, where comments are filed)
- Project: MCAI-2023-00052-A
- FR document: 2023-19092
- Official PDF: https://openairdocs.org/files/sha256/24/cc/24cc930790c96d3244d08eb34c68830a76a8806b659ebc51414be1a5074c6765 (from https://www.govinfo.gov/content/pkg/FR-2023-09-07/pdf/2023-19092.pdf)
- Federal Register: https://www.federalregister.gov/documents/2023/09/07/2023-19092/airworthiness-directives-piaggio-aviation-spa-airplanes
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/FR-ADNPRM-2023-19092-00000000000.0001
- Page: https://openairdocs.org/proposed/FAA-2023-1819

## Summary

The FAA proposes to adopt a new airworthiness directive (AD) for certain Piaggio Aviation S.p.A. (Piaggio) Model P-180 airplanes. This proposed AD was prompted by a report of corrosion on the various aluminum alloy reinforcements in the horizontal stabilizer (HS) central box caused by a humid environment inside the box from water ingress and/or condensation. This proposed AD would require a one-time detailed inspection of the 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 would be terminating action for the repetitive inspections. The FAA is proposing this AD to address the unsafe condition on these products.

## Notices in this docket

- Sep 7, 2023: Notice of proposed rulemaking (NPRM). (first notice), FR document 2023-19092, comments due Oct 23, 2023 (https://www.federalregister.gov/documents/2023/09/07/2023-19092/airworthiness-directives-piaggio-aviation-spa-airplanes)

---
OpenAirDocs.org is an independent research project of [Contrail Labs](https://contraillabs.com/). It is not affiliated with the FAA or the NTSB. Source documents are U.S. government works in the public domain.