# Establishment of Area Navigation (RNAV) Routes T-322, T-392, T-403, and T-405; Central United States.
> **Rule** · Final rule. · Published 2021-07-27 · Effective 2021-10-07 · 86 FR 40143
## Document
- **Document number:** 2021-15838
- **Category:** other
- **Type:** Rule
- **Action:** Final rule.
- **Citation:** 86 FR 40143
- **Publication date:** 2021-07-27
- **Effective date:** 2021-10-07
- **FAA docket:** Docket No. FAA-2021-0054
## Abstract

This action establishes area navigation (RNAV) routes T-322, T-392, T-403, and T-405 in the central United States. The new RNAV routes expand the availability of RNAV coverage in support of transitioning the National Airspace System (NAS) from ground-based to satellite-based navigation. Additionally, a portion of the new RNAV routes provide enroute structure where VHF Omnidirectional Range (VOR) Federal airway segments were removed due to the decommissioning of Sioux City, IA; Park Rapids, MN; and Huron, SD, VORs, in support of the FAA's VOR Minimum Operational Network (MON) program.

## Source
- [Federal Register document](https://www.federalregister.gov/documents/2021/07/27/2021-15838/establishment-of-area-navigation-rnav-routes-t-322-t-392-t-403-and-t-405-central-united-states)
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