# Airworthiness Directives; BAE Systems (Operations) Limited Airplanes
> **Rule** · Final rule. · Published 2018-09-28 · Effective 2018-11-02 · 83 FR 48938
## Document
- **Document number:** 2018-20923
- **Category:** airworthiness
- **Manufacturer:** BAE Systems (Operations) Limited
- **Type:** Rule
- **Action:** Final rule.
- **Citation:** 83 FR 48938
- **Publication date:** 2018-09-28
- **Effective date:** 2018-11-02
- **FAA docket:** Docket No. FAA-2018-0555
## Abstract

We are adopting a new airworthiness directive (AD) for all BAE Systems (Operations) Limited Model 4101 airplanes. This AD was prompted by a report of an improperly installed spacer around the electrical pins in the cartridge connector for the fire bottle extinguisher cartridge. This AD requires repetitive inspections for excessive or missing spacers, and applicable corrective actions. We are issuing this AD to address the unsafe condition on these products.

## Source
- [Federal Register document](https://www.federalregister.gov/documents/2018/09/28/2018-20923/airworthiness-directives-bae-systems-operations-limited-airplanes)
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