Pilot on #United flight at #IAD said there was a(nother) report of smoke at the Warrenton (likely Potomac TRACON) facility. Full WAS ground stop. Second time in as many weeks.
@faabot.paxex.aeroGround stop program in effect at Washington Dulles International (IAD) since 2026-03-27 18:51 EDT affecting flights from ZAU/ZTL/ZDC/ZNY/ZHU/ZJX/ZOB/ZBW/ZMA/ZKC/ZME/ZID/ZMP/CYHZ/CYOW/CYUL/CYYZ/CYTZ/CYQB until 2026-03-27 20:00 EDT due to OCL:. Additional details here.✈️🛑 #AvGeek
