# Modification of Class E Airspace; Twin Falls, ID
> **Rule** · Final rule. · Published 2009-07-07 · Effective 2009-10-22 · 74 FR 32074
## Document
- **Document number:** E9-15873
- **Category:** airspace
- **Type:** Rule
- **Action:** Final rule.
- **Citation:** 74 FR 32074
- **Publication date:** 2009-07-07
- **Effective date:** 2009-10-22
- **FAA docket:** Docket No. FAA-2009-0253
## Abstract

This action will modify Class E airspace at Twin Falls, ID. Additional controlled airspace is necessary to accommodate aircraft using a new VHF Omni-Directional Radio Range (VOR) Standard Instrument Approach Procedure (SIAP) at Twin Falls Joslin Field--Magic Valley Regional, Twin Falls, ID. This will improve the safety of Instrument Flight Rules (IFR) aircraft executing the new VOR SIAP at Twin Falls Joslin Field--Magic Valley Regional, Twin Falls, ID.

## Source
- [Federal Register document](https://www.federalregister.gov/documents/2009/07/07/E9-15873/modification-of-class-e-airspace-twin-falls-id)
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