# Airworthiness Directives; British Aerospace (Jetstream) Model 4101 Airplanes
> **Rule** · Final rule. · Published 1999-12-08 · Effective 2000-01-12 · 64 FR 68628
## Document
- **Document number:** 99-31473
- **Category:** airworthiness
- **Manufacturer:** British Aerospace (Jetstream) Model 4101
- **Type:** Rule
- **Action:** Final rule.
- **Citation:** 64 FR 68628
- **Publication date:** 1999-12-08
- **Effective date:** 2000-01-12
- **FAA docket:** Docket No. 98-NM-296-AD
## Abstract

This amendment adopts a new airworthiness directive (AD), applicable to certain British Aerospace (Jetstream) Model 4101 airplanes, that requires a one-time inspection of the bottom aft roller of the main baggage-bay door structure for cracking or damage to the sub-frame; repetitive operational tests to determine if the counter- balance motor functions properly; and corrective actions, if necessary. This amendment is prompted by issuance of mandatory continuing airworthiness information by a foreign civil airworthiness authority. The actions specified by this AD are intended to prevent sub-frame damage, which, if left undetected, could cause rapid decompression of the airplane and consequent injury to passengers and crew.

## Source
- [Federal Register document](https://www.federalregister.gov/documents/1999/12/08/99-31473/airworthiness-directives-british-aerospace-jetstream-model-4101-airplanes)
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