# Establishment of United States Area Navigation Route Q-161 and Amendment of United States Area Navigation Routes Q-97, Q-133, Q-437, Q-439, Q-445, and Q-481; Eastern United States
> **Rule** · Final rule. · Published 2025-03-20 · Effective 2025-06-12 · 90 FR 13063
## Document
- **Document number:** 2025-04393
- **Category:** other
- **Type:** Rule
- **Action:** Final rule.
- **Citation:** 90 FR 13063
- **Publication date:** 2025-03-20
- **Effective date:** 2025-06-12
- **FAA docket:** Docket No. FAA-2024-2352
## Abstract

This action establishes United States Area Navigation (RNAV) Route Q-161 and amends RNAV Routes Q-97, Q-133, Q-409, Q-437, Q-439, Q- 445, and Q-481 in the eastern United States. This action supports the Northeast Corridor Atlantic Coast Route (NEC ACR) Optimization Project to improve the efficiency of the National Airspace System (NAS).

## Source
- [Federal Register document](https://www.federalregister.gov/documents/2025/03/20/2025-04393/establishment-of-united-states-area-navigation-route-q-161-and-amendment-of-united-states-area)
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