# Proposed AD 2000-NM-392-AD: Boeing Model 757-200, -200CB, and -300 Series Airplanes

- Type: Proposed airworthiness directive (not in force)
- Status: Became AD 2002-21-14
- Products: Boeing
- Product type: Aircraft
- Action: Notice of proposed rulemaking (NPRM).
- Published: February 26, 2002, 67 FR 8741
- Comments due: April 12, 2002
- Became: [AD 2002-21-14](https://openairdocs.org/ad/2002-21-14)
- Docket: 2000-NM-392-AD
- FR document: 02-4506
- Official PDF: https://openairdocs.org/files/sha256/98/96/9896c693380e2c4362921a0ea18ccb158ba78110ba04ea9b3ea0c863bd2c5f28 (from https://www.govinfo.gov/content/pkg/FR-2002-02-26/pdf/02-4506.pdf)
- Federal Register: https://www.federalregister.gov/documents/2002/02/26/02-4506/airworthiness-directives-boeing-model-757-200--200cb-and--300-series-airplanes
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/FE966547CFDDB21886256B6C00504AE9.0001
- Page: https://openairdocs.org/proposed/2000-NM-392-AD

## Summary

This document proposes the adoption of a new airworthiness directive (AD) that is applicable to certain Boeing Model 757-200, -200CB, and -300 series airplanes. This proposal would require determining the part numbers of the master control valve on the pressure bottles that activate the off-wing escape slides, and corrective action, if necessary. This action is necessary to prevent failure of an escape slide to deploy or inflate correctly, which could cause the slide to be unusable during an emergency evacuation and result in consequent injury to passengers or crewmembers. This action is intended to address the identified unsafe condition.

## Notices in this docket

- Feb 26, 2002: Notice of proposed rulemaking (NPRM). (first notice), FR document 02-4506, comments due Apr 12, 2002 (https://www.federalregister.gov/documents/2002/02/26/02-4506/airworthiness-directives-boeing-model-757-200--200cb-and--300-series-airplanes)

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