DEPARTMENT OF TRANSPORTATION
<SUBAGY>Federal Aviation Administration</SUBAGY>
<CFR>14 CFR Part 71</CFR>
<DEPDOC>[Docket No. FAA-2026-1062; Airspace Docket No. 25-AEA-12]</DEPDOC>
<RIN>RIN 2120-AA66</RIN>
<SUBJECT>Amendment of United States Area Navigation (RNAV) Route T-437; Eastern United States</SUBJECT>
<HD SOURCE="HED">AGENCY:</HD>
Federal Aviation Administration (FAA), DOT.
<HD SOURCE="HED">ACTION:</HD>
Notice of proposed rulemaking (NPRM).
<SUM>
<HD SOURCE="HED">SUMMARY:</HD>
This action proposes to amend 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).
</SUM>
<EFFDATE>
<HD SOURCE="HED">DATES:</HD>
Comments must be received on or before March 16, 2026.
</EFFDATE>
<HD SOURCE="HED">ADDRESSES:</HD>
Send comments identified by FAA Docket No. FAA-2026-1062 and Airspace Docket No. 25-AEA-12 using any of the following methods:
*
<E T="03">Federal eRulemaking Portal:</E>
Go to
<E T="03">www.regulations.gov</E>
and follow the online instructions for sending your comments electronically.
*
<E T="03">Mail:</E>
Send comments to Docket Operations, M-30; U.S. Department of Transportation, 1200 New Jersey Avenue SE, Room W12-140, West Building Ground Floor, Washington, DC 20590-0001.
*
<E T="03">Hand Delivery or Courier:</E>
Take comments to Docket Operations in Room W12-140 of the West Building Ground Floor at 1200 New Jersey Avenue SE, Washington, DC, between 9 a.m. and 5 p.m., Monday through Friday, except Federal holidays.
*
<E T="03">Fax:</E>
Fax comments to Docket Operations at (202) 493-2251.
<E T="03">Docket:</E>
Background documents or comments received may be read at
<E T="03">www.regulations.gov</E>
at any time. Follow the online instructions for accessing the
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