# Airworthiness Directives; Gulfstream Aerospace Corporation Airplanes
> **Rule** · Final rule. · Published 2020-06-15 · Effective 2020-07-20 · 85 FR 36143
## Document
- **Document number:** 2020-12812
- **Category:** airworthiness
- **Manufacturer:** Gulfstream Aerospace Corporation
- **Type:** Rule
- **Action:** Final rule.
- **Citation:** 85 FR 36143
- **Publication date:** 2020-06-15
- **Effective date:** 2020-07-20
- **FAA docket:** Docket No. FAA-2019-1060
## Abstract

The FAA is adopting a new airworthiness directive (AD) for all Gulfstream Aerospace Corporation (Gulfstream) Model G-IV airplanes. This AD was prompted by reports of un-commanded nose wheel steering turns. This AD requires replacing the nose wheel steering servo valve manifold, incorporating revised operating procedures into the airplane flight manual (AFM), doing a records inspection for any incidents of un-commanded nose wheel steering turns, and reporting the results to the FAA. The FAA is issuing this AD to address the unsafe condition on these products.

## Source
- [Federal Register document](https://www.federalregister.gov/documents/2020/06/15/2020-12812/airworthiness-directives-gulfstream-aerospace-corporation-airplanes)
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