# Amendment of Class E Airspace; Duncan, OK
> **Rule** · Final rule. · Published 2018-06-05 · Effective 2018-09-13 · 83 FR 25901
## Document
- **Document number:** 2018-11860
- **Category:** airspace
- **Type:** Rule
- **Action:** Final rule.
- **Citation:** 83 FR 25901
- **Publication date:** 2018-06-05
- **Effective date:** 2018-09-13
- **FAA docket:** Docket No. FAA-2018-0100
## Abstract

This action amends Class E airspace extending upward from 700 feet above the surface at Halliburton Field, Duncan, OK. This action is a result of an airspace review caused by the decommissioning of the Duncan VHF omnidirectional range (VOR) navigation aid as part of the VOR Minimum Operational Network (MON) Program and the cancellation of the associated instrument procedures. The geographic coordinates of the airport are also being updated to coincide with the FAA's aeronautical database, as well as an editorial change removing the city associated with the airport name in the airspace legal designation.

## Source
- [Federal Register document](https://www.federalregister.gov/documents/2018/06/05/2018-11860/amendment-of-class-e-airspace-duncan-ok)
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