# Amendment of Area Navigation (RNAV) Route T-299, and Establishment of T-318 and T-360; Eastern United States
**AGENCY:**
Federal Aviation Administration (FAA) DOT.
**ACTION:**
Proposed rule; withdrawal.
**SUMMARY:**
The FAA is withdrawing the NPRM published in the *Federal Register* on December 28, 2018, proposing to amend United States Area Navigation (RNAV) route T-299, and establish T-318 and T-360 in support of transitioning the National Airspace System (NAS) from ground-based to satellite-based navigation.
**DATES:**
Effective as of 0901 UTC, July 17, 2023, the proposed rule published December 28, 2018 (83 FR 67160), is withdrawn.
**FOR FURTHER INFORMATION CONTACT:**
Paul Gallant, Rules and Regulations Group, Office of Policy, Federal Aviation Administration, 800 Independence Avenue SW, Washington, DC 20591; telephone: (202) 267-8783.
**SUPPLEMENTARY INFORMATION:**
**Reason for Withdrawal**
The FAA published a notice of proposed rulemaking in the *Federal Register* for Docket No. FAA-2018-1025 (83 FR 67160; December 28, 2018). The NPRM proposed to amend RNAV route T-299 and establish routes T-318 and T-360 to support the transition of the NAS to satellite-based navigation. Interested parties were invited to participate in this rulemaking effort by submitting written comments on the proposal. No comments were received. Subsequent to the NPRM, other airway docket actions rendered this proposal unnecessary.
**Conclusion**
The FAA determined that the NPRM published on December 28, 2018, is unnecessary. Therefore, the FAA withdraws that NPRM.
Issued in Washington, DC, on July 11, 2023.
Karen L. Chiodini,
Acting Manager, Airspace Rules and Regulations.