# Proposed AD FAA-2010-0778: Piaggio Aero Industries S.p.A. Model PIAGGIO P-180 Airplanes

- Type: Proposed airworthiness directive (not in force)
- Status: Comment period closed
- Products: Piaggio Aero Industries
- Product type: Aircraft
- Action: Notice of proposed rulemaking (NPRM).
- Published: August 9, 2010, 75 FR 47734
- Comments due: September 23, 2010
- Docket: FAA-2010-0778 (https://www.regulations.gov/docket/FAA-2010-0778, where comments are filed)
- Project: 2010-CE-034-AD
- FR document: 2010-19551
- Official PDF: https://openairdocs.org/files/sha256/c4/fe/c4fea4a34309393a76e724307f69b71a4efe3cffec985941cabe1c87147c5ae7 (from https://www.govinfo.gov/content/pkg/FR-2010-08-09/pdf/2010-19551.pdf)
- Federal Register: https://www.federalregister.gov/documents/2010/08/09/2010-19551/airworthiness-directives-piaggio-aero-industries-spa-model-piaggio-p-180-airplanes
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/E120E45C6C0D00A08625777A0062F7E6.0001
- Page: https://openairdocs.org/proposed/FAA-2010-0778

## Summary

We propose to adopt a new airworthiness directive (AD) for the products listed above. This proposed AD results from mandatory continuing airworthiness information (MCAI) originated by an aviation authority of another country to identify and correct an unsafe condition on an aviation product. The MCAI describes the unsafe condition as:

Some cases of corrosion were detected in the interface between the elevator hinges fittings (metallic) and the horizontal stabilizer (carbon fibre); investigation identified the cause in galvanic corrosion between dissimilar materials. If left uncorrected, this situation could lead to a structural failure of the elevator, which could result in possible loss of control of the aeroplane.

The proposed AD would require actions that are intended to address the unsafe condition described in the MCAI.

## Notices in this docket

- Aug 9, 2010: Notice of proposed rulemaking (NPRM). (first notice), FR document 2010-19551, comments due Sep 23, 2010 (https://www.federalregister.gov/documents/2010/08/09/2010-19551/airworthiness-directives-piaggio-aero-industries-spa-model-piaggio-p-180-airplanes)

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