# Proposed AD 95-NM-255-AD: Beech Model 400, 400A, MU-300-10, and 2000 Airplanes, and Model 200, B200, 300, and B300 Series Airplanes

- Type: Proposed airworthiness directive (not in force)
- Status: Became AD 96-17-10
- Action: Notice of proposed rulemaking (NPRM).
- Published: April 15, 1996, 61 FR 16416
- Comments due: May 28, 1996
- Became: [AD 96-17-10](https://openairdocs.org/ad/96-17-10)
- Docket: 95-NM-255-AD
- FR document: 96-9234
- Official PDF: https://openairdocs.org/files/sha256/c9/3b/c93b58d6e8b39e81330673b75c145a8a2c4f91efbf65b82ad966c9dd25ab82f5 (from https://www.govinfo.gov/content/pkg/FR-1996-04-15/pdf/96-9234.pdf)
- Federal Register: https://www.federalregister.gov/documents/1996/04/15/96-9234/airworthiness-directives-beech-model-400-400a-mu-300-10-and-2000-airplanes-and-model-200-b200-300
- Page: https://openairdocs.org/proposed/95-NM-255-AD

## Summary

This document proposes the adoption of a new airworthiness directive (AD) that is applicable to certain Beech Model 400, 400A, MU- 300-10, and 2000 airplanes, and Model 200, B200, 300, and B300 series 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

- Apr 15, 1996: Notice of proposed rulemaking (NPRM). (first notice), FR document 96-9234, comments due May 28, 1996 (https://www.federalregister.gov/documents/1996/04/15/96-9234/airworthiness-directives-beech-model-400-400a-mu-300-10-and-2000-airplanes-and-model-200-b200-300)

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