# Modification of Class E Airspace; Portland, OR
> **Rule** · Final rule. · Published 2010-11-29 · Effective 2011-03-10 · 75 FR 72939
## Document
- **Document number:** 2010-29737
- **Category:** airspace
- **Type:** Rule
- **Action:** Final rule.
- **Citation:** 75 FR 72939
- **Publication date:** 2010-11-29
- **Effective date:** 2011-03-10
- **FAA docket:** Docket No. FAA-2010-0719
## Abstract

This action will modify existing Class E airspace at Portland, OR, to accommodate aircraft using the Localizer/Distance Measuring Equipment (LOC/DME) Standard Instrument Approach Procedures (SIAPs) at Portland International Airport. This will improve the safety and management of Instrument Flight Rules (IFR) operations at the airport. This action also would adjust the geographic coordinates for the airports and the Corvallis VHF Omni-Directional Radio Range/Distance Measuring Equipment (VOR/DME).

## Source
- [Federal Register document](https://www.federalregister.gov/documents/2010/11/29/2010-29737/modification-of-class-e-airspace-portland-or)
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