# Modification of Class E Airspace; Sheridan, WY
> **Rule** · Final rule. · Published 2012-03-16 · Effective 2012-05-31 · 77 FR 15575
## Document
- **Document number:** 2012-6341
- **Category:** airspace
- **Type:** Rule
- **Action:** Final rule.
- **Citation:** 77 FR 15575
- **Publication date:** 2012-03-16
- **Effective date:** 2012-05-31
- **FAA docket:** Docket No. FAA-2011-1192
## Abstract

This action amends Class E airspace at Sheridan County Airport, Sheridan, WY. Decommissioning of the Sheridan Tactical Air Navigation System (TACAN) has made this action necessary for the safety and management of Instrument Flight Rules (IFR) operations at the airport.

## Source
- [Federal Register document](https://www.federalregister.gov/documents/2012/03/16/2012-6341/modification-of-class-e-airspace-sheridan-wy)
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