# Establishment of Class E Airspace; Plentywood, MT
> **Rule** · Final rule. · Published 2009-08-11 · Effective 2009-10-22 · 74 FR 40065
## Document
- **Document number:** E9-19031
- **Category:** airspace
- **Type:** Rule
- **Action:** Final rule.
- **Citation:** 74 FR 40065
- **Publication date:** 2009-08-11
- **Effective date:** 2009-10-22
- **FAA docket:** Docket No. FAA-2009-0225
## Abstract

This action will establish Class E airspace at Plentywood, MT. Controlled airspace is necessary to accommodate aircraft using a new Area Navigation (RNAV) Global Positioning System (GPS) Standard Instrument Approach Procedure (SIAP) at Plentywood Sher-Wood Airport, Plentywood, MT. This will improve the safety of Instrument Flight Rules (IFR) aircraft executing the new RNAV GPS SIAP at Plentywood Sher-Wood Airport, Plentywood, MT.

## Source
- [Federal Register document](https://www.federalregister.gov/documents/2009/08/11/E9-19031/establishment-of-class-e-airspace-plentywood-mt)
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