# Modification of Class E Airspace; Trinidad, CO
> **Rule** · Final rule. · Published 2004-06-18 · Effective 2004-09-02 · 69 FR 34055
## Document
- **Document number:** 04-13828
- **Category:** airspace
- **Type:** Rule
- **Action:** Final rule.
- **Citation:** 69 FR 34055
- **Publication date:** 2004-06-18
- **Effective date:** 2004-09-02
- **FAA docket:** Docket FAA 2003-15996
## Abstract

This final rule will modify Class E airspace at Trinidad, CO. New Area Navigation (RNAV) Global Position System (GPS) Standard Instrument Approach Procedures (SIAPs) have been developed at Perry Stokes Airport, Trinidad, CO, making it necessary to increase the area of controlled airspace. This additional controlled airspace extending upward from 700 feet or more above the surface of the earth is necessary to contain Instrument Flight Rules (IFR) aircraft executing these new SIAPs.

## Source
- [Federal Register document](https://www.federalregister.gov/documents/2004/06/18/04-13828/modification-of-class-e-airspace-trinidad-co)
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