# Proposed AD FAA-2011-0954: PIAGGIO AERO INDUSTRIES S.p.A Model PIAGGIO P-180 Airplanes

- Type: Proposed airworthiness directive (not in force)
- Status: Became AD 2011-24-01
- Products: Piaggio Aero Industries
- Product type: Aircraft
- Action: Notice of proposed rulemaking (NPRM).
- Published: September 1, 2011, 76 FR 54403
- Comments due: October 17, 2011
- Became: [AD 2011-24-01](https://openairdocs.org/ad/2011-24-01)
- Docket: FAA-2011-0954 (https://www.regulations.gov/docket/FAA-2011-0954, where comments are filed)
- Project: 2011-CE-028-AD
- FR document: 2011-22387
- Official PDF: https://openairdocs.org/files/sha256/63/e4/63e4edf70affd4bf0125292c9d2a2a15ee6426a98aa353ef43e3c1701dfedb7f (from https://www.govinfo.gov/content/pkg/FR-2011-09-01/pdf/2011-22387.pdf)
- Federal Register: https://www.federalregister.gov/documents/2011/09/01/2011-22387/airworthiness-directives-piaggio-aero-industries-spa-model-piaggio-p-180-airplanes
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/CE194B2D568F47E7862578FE004CBB92.0001
- Page: https://openairdocs.org/proposed/FAA-2011-0954

## 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 lock sleeves (part number (P/N) 114146681), which were installed in some Main Landing Gear (MLG) actuators, had been incorrectly manufactured. If left uncorrected, this condition could lead to failure to lock the MLG actuator or to its unlock from the correct position, with subsequent possible damage to the aeroplane and injuries to occupants during landing.

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

## Notices in this docket

- Sep 1, 2011: Notice of proposed rulemaking (NPRM). (first notice), FR document 2011-22387, comments due Oct 17, 2011 (https://www.federalregister.gov/documents/2011/09/01/2011-22387/airworthiness-directives-piaggio-aero-industries-spa-model-piaggio-p-180-airplanes)

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