# Modification of Class E Airspace; Alturas, CA
> **Rule** · Final rule. · Published 2011-07-28 · Effective 2011-10-20 · 76 FR 45180
## Document
- **Document number:** 2011-18949
- **Category:** airspace
- **Type:** Rule
- **Action:** Final rule.
- **Citation:** 76 FR 45180
- **Publication date:** 2011-07-28
- **Effective date:** 2011-10-20
- **FAA docket:** Docket No. FAA-2011-0403
## Abstract

This action modifies Class E airspace at Alturas Municipal Airport, Alturas, CA. Controlled airspace is necessary to accommodate aircraft using Area Navigation (RNAV) Global Positioning System (GPS) standard instrument approach procedures at Alturas Municipal 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/2011/07/28/2011-18949/modification-of-class-e-airspace-alturas-ca)
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