Chemical Odor at Potomac TRACON Halts Flights at Four Major DC‑Area Airports
The Federal Aviation Administration ordered a ground stop Friday evening at four major airports serving Washington, D.C., Baltimore, and Richmond after a strong chemical smell at the Potomac TRACON air‑traffic control facility began affecting controllers. FAA Secretary Sean Duffy said on social media that arrivals and departures were halted for just over an hour at Reagan National, Dulles International, Baltimore–Washington International and Richmond International airports, sending delays at some of the nation’s busiest hubs to roughly two hours and disrupting between one-quarter and one-third of departing flights. Flights began leaving again after 7 p.m. ET, but the inbound ground stop remained in place as officials worked through the backlog and assessed conditions. The FAA did not immediately explain the source of the odor or precisely how it was impairing controllers, raising questions online about occupational safety in crowded control centers and the vulnerability of centralized facilities that manage dense East Coast airspace.
📌 Key Facts
- On Friday evening, March 13, 2026, a strong chemical smell at the FAA’s Potomac TRACON facility led to a ground stop at four airports: Reagan National, Dulles, BWI and Richmond International.
- FAA Secretary Sean Duffy announced the halt on social media, saying the odor was affecting air traffic controllers.
- Between 25% and one-third of all departing flights from the four airports were delayed, with delays reaching about two hours at some hubs, and flights only began departing after 7 p.m. ET while the ground stop on arrivals remained in place.
📊 Relevant Data
The Washington, D.C. metropolitan area's population grew by 4.3% from 2015 to 2025, with immigration being the primary driver of this growth.
Is Washington, DC's population growing or shrinking? — USAFacts
International migration accounted for all or most of the population growth in many U.S. metro areas, including Washington, D.C., from 2023 to 2024.
Recent immigration brought a population rebound to America's major metro areas: New census data show — Brookings Institution
Air traffic at Washington, D.C. area airports reached a record 53.9 million passengers in 2025, driven by growth at Dulles International Airport.
Dulles Drives Record DC Airport Passenger Count In 2025 — Patch
Nearly 50% of major FAA air traffic control facilities are experiencing staffing shortages as of 2025.
FAA air traffic controllers are predominantly White (59.6%), followed by Hispanic or Latino (17.6%) and Black or African American (9.9%).
Air traffic controller demographics and statistics in the US — Zippia
FAA's air traffic control systems include legacy equipment nearly 30 years old, contributing to high maintenance costs and obsolescence issues.
Brand New Air Traffic Control System Plan — U.S. Department of Transportation
📰 Source Timeline (1)
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