# Proposed AD FAA-2025-5027: Piaggio Aviation S.p.A. Airplanes

- Type: Proposed airworthiness directive (not in force)
- Status: Became AD 2026-05-10
- Products: Baykar Piaggio Aerospace
- Product type: Aircraft
- Action: Notice of proposed rulemaking (NPRM).
- Published: December 10, 2025, 90 FR 57170
- Comments due: January 26, 2026
- Became: [AD 2026-05-10](https://openairdocs.org/ad/2026-05-10)
- Docket: FAA-2025-5027 (https://www.regulations.gov/docket/FAA-2025-5027, where comments are filed)
- Project: MCAI-2025-00023-A
- FR document: 2025-22444
- Official PDF: https://openairdocs.org/files/sha256/6f/f1/6ff11c5d37cfc7e7b43edc5f5a3861140ca457e9e979ed969160393e60f5ce17 (from https://www.govinfo.gov/content/pkg/FR-2025-12-10/pdf/2025-22444.pdf)
- Federal Register: https://www.federalregister.gov/documents/2025/12/10/2025-22444/airworthiness-directives-piaggio-aviation-spa-airplanes
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/FR-ADNPRM-2025-22444-00000000000.0001
- Page: https://openairdocs.org/proposed/FAA-2025-5027

## 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 chafing in the flap transmission shafts. This proposed AD would require inspecting the flap transmission shaft for chafing or any damage (surface abrasions, grooves or rubbing tracks, and metallic smears or transfers), measuring specific gaps, and, depending on findings, accomplishing applicable corrective actions. The FAA is proposing this AD to address the unsafe condition on these products.

## Notices in this docket

- Dec 10, 2025: Notice of proposed rulemaking (NPRM). (first notice), FR document 2025-22444, comments due Jan 26, 2026 (https://www.federalregister.gov/documents/2025/12/10/2025-22444/airworthiness-directives-piaggio-aviation-spa-airplanes)

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