# Amendment of United States Area Navigation (RNAV) Route T-437; Eastern United States

**Action Urgency Score:** 45/100

| Field | Value |
|---|---|
| Agency | Transportation Department; Federal Aviation Administration |
| Type | Final rule |
| Action | Final rule. |
| Published | 2026-10-13 |
| Effective | 2026-12-24 |
| Significant | No |
| CFR parts | 14 CFR 71 |
| Summary | This action amends United States Area Navigation (RNAV) Route T-437 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). |
| Document number | 2026-20847 |

## Why this score
- Upcoming deadline.
- Final rule.

Source: Federal Register API (Office of the Federal Register) (https://www.federalregister.gov/documents/2026/10/13/2026-20847/amendment-of-united-states-area-navigation-rnav-route-t-437-eastern-united-states). Last refreshed: 2026-11-04T09:17:43.641Z.
Data from the Federal Register API; the published Federal Register document is authoritative. Informational only, not legal advice.