# Modification of Class E Airspace; Billings, MT
> **Rule** · Final rule. · Published 2012-06-04 · Effective 2012-09-20 · 77 FR 32896
## Document
- **Document number:** 2012-13373
- **Category:** airspace
- **Type:** Rule
- **Action:** Final rule.
- **Citation:** 77 FR 32896
- **Publication date:** 2012-06-04
- **Effective date:** 2012-09-20
- **FAA docket:** Docket No. FAA-2012-0316
## Abstract

This action modifies Class E airspace at Billings Logan International Airport, Billings, MT. Controlled airspace is necessary to accommodate aircraft using Area Navigation (RNAV) Global Positioning System (GPS) standard instrument approach procedures at Billings Logan International Airport. This action will also make a minor adjustment to the geographic coordinates of the 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/2012/06/04/2012-13373/modification-of-class-e-airspace-billings-mt)
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