# Amendment of Area Navigation (RNAV) Routes Q-121 and Q-156; Miles City, MT
> **Rule** · Final rule. · Published 2019-10-01 · Effective 2019-12-05 · 84 FR 51964
## Document
- **Document number:** 2019-21193
- **Category:** other
- **Type:** Rule
- **Action:** Final rule.
- **Citation:** 84 FR 51964
- **Publication date:** 2019-10-01
- **Effective date:** 2019-12-05
- **FAA docket:** Docket No. FAA-2019-0267
## Abstract

This action amends the legal descriptions of area navigation (RNAV) routes Q-121 and Q-156 by changing the name of one waypoint common to each route. Specifically, this action changes the TOUGH waypoint name to SWTHN in RNAV routes Q-121 and Q-156.

## Source
- [Federal Register document](https://www.federalregister.gov/documents/2019/10/01/2019-21193/amendment-of-area-navigation-rnav-routes-q-121-and-q-156-miles-city-mt)
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