# Establishment of Class E Airspace and Amendment to Class D Airspace; Troutdale, OR
> **Rule** · Final rule. · Published 2010-09-21 · Effective 2010-11-18 · 75 FR 57374
## Document
- **Document number:** 2010-23397
- **Category:** airspace
- **Type:** Rule
- **Action:** Final rule.
- **Citation:** 75 FR 57374
- **Publication date:** 2010-09-21
- **Effective date:** 2010-11-18
- **FAA docket:** Docket No. FAA-2010-0393
## Abstract

This action will establish Class E airspace and amend existing Class D airspace at Troutdale, OR, to accommodate aircraft using Non- directional Radio Beacon (NDB) Global Positioning System (GPS) Standard Instrument Approach Procedures (SIAPs) at Portland-Troutdale Airport. This will improve the safety and management of Instrument Flight Rules (IFR) operations at the airport. This action also amends the geographic coordinates of the Class D airspace area at the airport.

## Source
- [Federal Register document](https://www.federalregister.gov/documents/2010/09/21/2010-23397/establishment-of-class-e-airspace-and-amendment-to-class-d-airspace-troutdale-or)
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