# Establishment and Amendment of Multiple United States Area Navigation (RNAV) Routes; Eastern United States
> **Rule** · Final rule. · Published 2025-02-03 · Effective 2025-04-17 · 90 FR 8775
## Document
- **Document number:** 2025-02054
- **Category:** other
- **Type:** Rule
- **Action:** Final rule.
- **Citation:** 90 FR 8775
- **Publication date:** 2025-02-03
- **Effective date:** 2025-04-17
- **FAA docket:** Docket No. FAA-2024-1157
## Abstract

This action establishes United States Area Navigation (RNAV) Route T-553 and amends RNAV Routes T-356, T-358, and T-479 in the eastern United States. This action supports FAA Next Generation Air Transportation System (NextGen) efforts to provide a modern RNAV route structure to improve the safety and efficiency of the National Airspace System (NAS).

## Source
- [Federal Register document](https://www.federalregister.gov/documents/2025/02/03/2025-02054/establishment-and-amendment-of-multiple-united-states-area-navigation-rnav-routes-eastern-united)
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