# Modification of Class E Airspace; Cahokia, IL
> **Rule** · Final rule. · Published 1999-04-26 · 64 FR 20159
## Document
- **Document number:** 99-10440
- **Category:** airspace
- **Type:** Rule
- **Action:** Final rule.
- **Citation:** 64 FR 20159
- **Publication date:** 1999-04-26
- **FAA docket:** Airspace Docket No. 99-AGL-4
## Abstract

This notice modifies Class E airspace at Cahokia, IL. A Global Positioning System (GPS) Standard Instrument Approach Procedure (SIAP) to Runway (Rwy) 30L has been developed for St. Louis Downtown-Parks Airport. Controlled airspace extending upward from 700 to 1200 feet above ground level (AGL) is needed to contain aircraft executing the approach. This action increases the radius of the existing controlled airspace for this airport.

## Source
- [Federal Register document](https://www.federalregister.gov/documents/1999/04/26/99-10440/modification-of-class-e-airspace-cahokia-il)
---
*AI Analytics · CC0 1.0*