# Modification of Class E Airspace, Lewistown, MT
> **Rule** · Final rule. · Published 2001-08-29 · 66 FR 45598
## Document
- **Document number:** 01-21822
- **Category:** airspace
- **Type:** Rule
- **Action:** Final rule.
- **Citation:** 66 FR 45598
- **Publication date:** 2001-08-29
- **FAA docket:** Airspace Docket No. 00-ANM-27
## Abstract

This action revises the Class E airspace at Lewistown, MT. Newly developed Area Navigation (RNAV) Standard Instrument Approach Procedure (SIAP) at the Lewistown Municipal Airport made this action necessary. Additional Class E 700 feet and 1,200 feet controlled airspace, above the surface of the earth is required to contain aircraft executing the RNAV SIAP at Lewistown Municipal Airport.

## Source
- [Federal Register document](https://www.federalregister.gov/documents/2001/08/29/01-21822/modification-of-class-e-airspace-lewistown-mt)
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