# Proposed AD 95-NM-256-AD: Piaggio Model P-180 Airplanes

- Type: Proposed airworthiness directive (not in force)
- Status: Became AD 96-18-20
- Action: Notice of proposed rulemaking (NPRM).
- Published: March 13, 1996, 61 FR 10292
- Comments due: April 22, 1996
- Became: [AD 96-18-20](https://openairdocs.org/ad/96-18-20)
- Docket: 95-NM-256-AD
- FR document: 96-5944
- Official PDF: https://openairdocs.org/files/sha256/57/2e/572ec9faf8e836681c2a6b97fadfa578f514db77b29fdea20ef69934e0ce35ff (from https://www.govinfo.gov/content/pkg/FR-1996-03-13/pdf/96-5944.pdf)
- Federal Register: https://www.federalregister.gov/documents/1996/03/13/96-5944/airworthiness-directives-piaggio-model-p-180-airplanes
- Page: https://openairdocs.org/proposed/95-NM-256-AD

## Summary

This document proposes the adoption of a new airworthiness directive (AD) that is applicable to certain Piaggio Model P-180 airplanes. This proposal would require replacement of outflow/safety valves with serviceable valves. This proposal is prompted by a report of cracking and subsequent failure of outflow safety valves in the pressurization system. The actions specified by the proposed AD are intended to prevent such cracking and subsequent failure of the outflow/safety valves, which could result in rapid decompression of the airplane.

## Notices in this docket

- Mar 13, 1996: Notice of proposed rulemaking (NPRM). (first notice), FR document 96-5944, comments due Apr 22, 1996 (https://www.federalregister.gov/documents/1996/03/13/96-5944/airworthiness-directives-piaggio-model-p-180-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.