# Proposed AD 97-NM-339-AD: British Aerospace (Jetstream) Model 4101 Airplanes

- Type: Proposed airworthiness directive (not in force)
- Status: Became AD 98-20-09
- Action: Notice of proposed rulemaking (NPRM).
- Published: July 31, 1998, 63 FR 40856
- Comments due: August 31, 1998
- Became: [AD 98-20-09](https://openairdocs.org/ad/98-20-09)
- Docket: 97-NM-339-AD
- FR document: 98-20430
- Official PDF: https://openairdocs.org/files/sha256/ea/4f/ea4f5515206883f07aa7e55b400c3bbbb0beaadfcc64da2efc7539a0bbbe00ba (from https://www.govinfo.gov/content/pkg/FR-1998-07-31/pdf/98-20430.pdf)
- Federal Register: https://www.federalregister.gov/documents/1998/07/31/98-20430/airworthiness-directives-british-aerospace-jetstream-model-4101-airplanes
- Page: https://openairdocs.org/proposed/97-NM-339-AD

## Summary

This document proposes the supersedure of an existing airworthiness directive (AD), applicable to all British Aerospace (Jetstream) Model 4101 airplanes, that currently requires repetitive functional testing of the main entrance door, cleaning and lubricating of the ``speed'' lock and ``G'' lock systems, and repair, if necessary. This action would add a requirement for replacement of the ``G'' lock rollers with new, improved ``G'' lock rollers. This proposal is prompted by issuance of mandatory continuing airworthiness information by a foreign civil airworthiness authority. The actions specified by the proposed AD are intended to prevent inability of the main entrance door to open, which could delay or impede passengers exiting the airplane, or rescue personnel from entering the airplane during an emergency.

## Notices in this docket

- Jul 31, 1998: Notice of proposed rulemaking (NPRM). (first notice), FR document 98-20430, comments due Aug 31, 1998 (https://www.federalregister.gov/documents/1998/07/31/98-20430/airworthiness-directives-british-aerospace-jetstream-model-4101-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.