# Establishment of Class E Airspace; Twin Falls, ID
> **Rule** · Final rule. · Published 1997-10-31 · 62 FR 58896
## Document
- **Document number:** 97-28946
- **Category:** airspace
- **Type:** Rule
- **Action:** Final rule.
- **Citation:** 62 FR 58896
- **Publication date:** 1997-10-31
- **FAA docket:** Airspace Docket No. 97-ANM-08
## Abstract

This action establishes the Twin Falls, ID, Class E airspace. The recent commissioning of the Twin Falls Automated Surface Observation System (ASOS) qualifies the Joslin Field-Magic Valley Regional Airport for a Class E surface area. The intended effect of this action is to provide the controlled airspace necessary, when the control tower is closed and Class D airspace is not active, to enable the FAA to provide Instrument Flight Rules (IFR) air traffic control services and separation to IFR aircraft.

## Source
- [Federal Register document](https://www.federalregister.gov/documents/1997/10/31/97-28946/establishment-of-class-e-airspace-twin-falls-id)
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