# Proposed AD 2002-NM-43-AD: Various Boeing and McDonnell Douglas Transport Category Airplanes

- Type: Proposed airworthiness directive (not in force)
- Status: Became AD 2003-03-15
- Products: Boeing and McDonnell Douglas
- Product type: Aircraft
- Action: Notice of proposed rulemaking (NPRM).
- Published: June 26, 2002, 67 FR 43058
- Comments due: August 28, 2002
- Became: [AD 2003-03-15](https://openairdocs.org/ad/2003-03-15)
- Docket: 2002-NM-43-AD
- FR document: 02-15661
- Official PDF: https://openairdocs.org/files/sha256/ac/4c/ac4c728d4c76ad99f665fa44f01095e335deff289b9f821cc64ecc27a47ccb3d (from https://www.govinfo.gov/content/pkg/FR-2002-06-26/pdf/02-15661.pdf)
- Federal Register: https://www.federalregister.gov/documents/2002/06/26/02-15661/airworthiness-directives-various-boeing-and-mcdonnell-douglas-transport-category-airplanes
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/FCFADE1ABCBED2AE86256BE4006EFDCE.0001
- Page: https://openairdocs.org/proposed/2002-NM-43-AD

## Summary

This document proposes the adoption of a new airworthiness directive (AD) that is applicable to various Boeing and McDonnell Douglas transport category airplanes. This proposal would require revising the Airplane Flight Manual (AFM) to advise the flightcrew to don oxygen masks as a first and immediate step when the cabin altitude warning horn sounds. This action is necessary to prevent incapacitation of the flightcrew due to lack of oxygen, which could result in loss of control of the airplane. This action is intended to address the identified unsafe condition..

## Notices in this docket

- Jun 26, 2002: Notice of proposed rulemaking (NPRM). (first notice), FR document 02-15661, comments due Aug 28, 2002 (https://www.federalregister.gov/documents/2002/06/26/02-15661/airworthiness-directives-various-boeing-and-mcdonnell-douglas-transport-category-airplanes)

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