# Airworthiness Directives; British Aerospace (Jetstream) Model 4101 Airplanes
> **Rule** · Final rule; request for comments. · Published 1997-09-09 · Effective 1997-09-24 · 62 FR 47362
## Document
- **Document number:** 97-23861
- **Category:** airworthiness
- **Manufacturer:** British Aerospace (Jetstream) Model 4101
- **Type:** Rule
- **Action:** Final rule; request for comments.
- **Citation:** 62 FR 47362
- **Publication date:** 1997-09-09
- **Effective date:** 1997-09-24
- **FAA docket:** Docket No. 97-NM-164-AD
## Abstract

This amendment adopts a new airworthiness directive (AD) that is applicable to all British Aerospace (Jetstream) Model 4101 airplanes. This action 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 amendment is prompted by reports of flight crews and ground crews being unable to open the main entrance door. The actions specified in this 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.

## Source
- [Federal Register document](https://www.federalregister.gov/documents/1997/09/09/97-23861/airworthiness-directives-british-aerospace-jetstream-model-4101-airplanes)
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