# Amendment of Class E Airspace; Dillon, MT
> **Rule** · Final rule. · Published 2012-09-11 · Effective 2012-11-15 · 77 FR 55690
## Document
- **Document number:** 2012-22269
- **Category:** airspace
- **Type:** Rule
- **Action:** Final rule.
- **Citation:** 77 FR 55690
- **Publication date:** 2012-09-11
- **Effective date:** 2012-11-15
- **FAA docket:** Docket No. FAA-2011-1213
## Abstract

This action amends Class E airspace extending upward from 700 feet above the surface, and adds controlled surface airspace at Dillon, MT, to accommodate aircraft using new Area Navigation (RNAV) Global positioning System (GPS) standard instrument approach procedures at Dillon Airport. This improves the safety and management of Instrument Flight Rules (IFR) operations at the airport. The geographic coordinates of the airport also are adjusted.

## Source
- [Federal Register document](https://www.federalregister.gov/documents/2012/09/11/2012-22269/amendment-of-class-e-airspace-dillon-mt)
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