# Revision of Class E Airspace; Altus, OK
> **Rule** · Direct final rule; request for comments. · Published 1997-05-23 · Effective 1997-09-11 · 62 FR 28337
## Document
- **Document number:** 97-13568
- **Category:** airspace
- **Type:** Rule
- **Action:** Direct final rule; request for comments.
- **Citation:** 62 FR 28337
- **Publication date:** 1997-05-23
- **Effective date:** 1997-09-11
- **FAA docket:** Airspace Docket No. 97-ASW-09
## Abstract

This action revises the Class E airspace extending upward from 700 feet above the surface at Altus, OK. The development of a Instrument Landing System (ILS) Standard Instrument Approach Procedure (SIAP) to Runway (RWY) 17R at Altus Air Force Base (AFB) has made this rule necessary. This action is intended to provide adequate Class E airspace for aircraft operating under Instrument Flight Rules (IFR) and executing the ILS SIAP to RWY 17R at Altus AFB, Altus, OK.

## Source
- [Federal Register document](https://www.federalregister.gov/documents/1997/05/23/97-13568/revision-of-class-e-airspace-altus-ok)
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