# Amendment of Class D and Class E Airspace; Twin Falls, ID
> **Rule** · Final rule. · Published 2018-03-15 · Effective 2018-05-24 · 83 FR 11409
## Document
- **Document number:** 2018-05050
- **Category:** airspace
- **Type:** Rule
- **Action:** Final rule.
- **Citation:** 83 FR 11409
- **Publication date:** 2018-03-15
- **Effective date:** 2018-05-24
- **FAA docket:** Docket No. FAA-2017-0969
## Abstract

This action modifies Class E airspace designated as an extension, and modifies Class E airspace extending upward from 700 feet above the surface at Joslin Field-Magic Valley Regional Airport, Twin Falls, ID. Also, the part-time Notice to Airmen (NOTAM) status is removed from Class E airspace designated as an extension. Additionally, an editorial change is made to the Class D airspace, Class E surface airspace, and Class E extension airspace legal descriptions replacing "Airport/Facility Directory" with the term "Chart Supplement." Also, this action removes the words "Twin Falls" from the airport name in the airspace designations for Class D and E airspace. These actions are necessary to accommodate airspace redesign for the safety and management of instrument flight rules (IFR) operations within the National Airspace System.

## Source
- [Federal Register document](https://www.federalregister.gov/documents/2018/03/15/2018-05050/amendment-of-class-d-and-class-e-airspace-twin-falls-id)
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