# Amendment of Class E Airspace for the Following South Dakota Towns; Belle Fourche, SD; Madison, SD; Mobrigde, SD; and Vermillion, SD
> **Rule** · Final rule. · Published 2016-06-01 · Effective 2016-09-15 · 81 FR 34880
## Document
- **Document number:** 2016-12638
- **Category:** airspace
- **Type:** Rule
- **Action:** Final rule.
- **Citation:** 81 FR 34880
- **Publication date:** 2016-06-01
- **Effective date:** 2016-09-15
- **FAA docket:** Docket No. FAA-2016-0525
## Abstract

This action modifies Class E airspace extending upward from 700 feet above the surface at Belle Fourche Municipal Airport, Belle Fourche, SD; Madison Municipal Airport, Madison, SD; Mobridge Municipal Airport, Mobridge, SD; and Harold Davidson Field, Vermillion, SD. The decommissioning of non-directional radio beacons (NDB) and/or cancellation of NDB approaches due to advances in Global Positioning System (GPS) capabilities have made this action necessary for the safety and management of Instrument Flight Rules (IFR) operations at the above airports.

## Source
- [Federal Register document](https://www.federalregister.gov/documents/2016/06/01/2016-12638/amendment-of-class-e-airspace-for-the-following-south-dakota-towns-belle-fourche-sd-madison-sd)
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