# Airworthiness Directives; Gulfstream Aerospace LP Model Gulfstream 100 Airplanes; and Model Astra SPX and 1125 Westwind Astra Series Airplanes
> **Rule** · Final rule. · Published 2005-01-06 · Effective 2005-02-10 · 70 FR 1180
## Document
- **Document number:** 05-284
- **Category:** airworthiness
- **Manufacturer:** Gulfstream Aerospace LP Model Gulfstream 100
- **Type:** Rule
- **Action:** Final rule.
- **Citation:** 70 FR 1180
- **Publication date:** 2005-01-06
- **Effective date:** 2005-02-10
- **FAA docket:** Docket No. FAA-2004-19138
## Abstract

The FAA is adopting a new airworthiness directive (AD) for certain Gulfstream Aerospace LP Model Gulfstream 100 airplanes; and Model Astra SPX and 1125 Westwind Astra series airplanes. This AD requires adjusting the ground contact switches of the main landing gear. This AD is prompted by two occurrences of uncommanded deployments of the ground airbrakes during descent. We are issuing this AD to prevent a false "Ground" position signal, which could result in deployment of the ground airbrakes and reduced controllability of the airplane.

## Source
- [Federal Register document](https://www.federalregister.gov/documents/2005/01/06/05-284/airworthiness-directives-gulfstream-aerospace-lp-model-gulfstream-100-airplanes-and-model-astra-spx)
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