# Revision of Class E Airspace, Sidney, MT
> **Rule** · Final rule. · Published 2001-08-29 · 66 FR 45597
## Document
- **Document number:** 01-21823
- **Category:** airspace
- **Type:** Rule
- **Action:** Final rule.
- **Citation:** 66 FR 45597
- **Publication date:** 2001-08-29
- **FAA docket:** Airspace Docket No. 01-ANM-05
## Abstract

This action revises the Class E airspace at Sidney, MT. Newly developed Area Navigation (RNAV) Standard Instrument Approach Procedure (SIAP) at the Sidney-Richland Municipal Airport made this action necessary. Additional Class E 1,200 feet controlled airspace, above the surface of the earth is required to contain aircraft executing the RNAV (Global Positioning System (GPS)) RWY 1 and RNAV (GPS) RWY 19 at Sidney-Richland Municipal Airport.

## Source
- [Federal Register document](https://www.federalregister.gov/documents/2001/08/29/01-21823/revision-of-class-e-airspace-sidney-mt)
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