# Amendment of Class E Airspace; Lewistown, MT
> **Rule** · Final rule. · Published 2012-08-29 · Effective 2012-11-15 · 77 FR 52219
## Document
- **Document number:** 2012-21164
- **Category:** airspace
- **Type:** Rule
- **Action:** Final rule.
- **Citation:** 77 FR 52219
- **Publication date:** 2012-08-29
- **Effective date:** 2012-11-15
- **FAA docket:** Docket No. FAA-2012-0538
## Abstract

This action modifies Class E airspace at Lewistown Municipal Airport, Lewistown, MT. Controlled airspace is necessary to accommodate aircraft using Area Navigation (RNAV) Global Positioning System (GPS) standard instrument approach procedures at Lewistown Municipal Airport. This improves the safety and management of Instrument Flight Rules (IFR) operations at the airport.

## Source
- [Federal Register document](https://www.federalregister.gov/documents/2012/08/29/2012-21164/amendment-of-class-e-airspace-lewistown-mt)
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