FAA clears Trump's Triumphal Arch as safe, then orders an 'eternal flame' to alert pilots

The National Park Service said in an August assessment that the Arch could affect dozens of Washington historic sites by blocking important views
President Donald Trump holds a model of an arch as he delivers remarks during a ballroom fundraising dinner in the East Room of the White House on October 15, 2025, in Washington, DC (Getty Images)
President Donald Trump holds a model of an arch as he delivers remarks during a ballroom fundraising dinner in the East Room of the White House on October 15, 2025, in Washington, DC (Getty Images)

WASHINGTON, DC: The 250-foot-tall proposed United States Triumphal Arch is once again in the spotlight, with the Federal Aviation Administration (FAA) saying that the monument would require an “eternal flame” on top to alert nearby pilots.

The Triumphal Arch, which is also dubbed "Arc de Trump," has been controversial primarily due to its massive scale and its chosen location near sacred and historic sites.

Critics have also raised concerns over the bypassing of legal and congressional approval processes.

FAA requires an 'eternal flame' on Arch

After declaring that the Triumphal Arch would not prove hazardous, the FAA said that it would require an “eternal flame.”

WASHINGTON, DC - JUNE 25: The sun sets behind a replica of the planned Triumphal Arch and the 110-foot
The sun sets behind a replica of the planned Triumphal Arch and the 110-foot 'Freedom 250' ferris wheel on the first day of the 'Great American State Fair' on the National Mall on June 25, 2026, in Washington, DC (Al Drago/Getty Images)

“The FAA’s determination includes conditions for the Arch to be appropriately marked with a non-standard eternal flame on top of the structure and floodlight projectors pointed towards the Arch to make it noticeable for pilots,” an FAA spokesperson told The Hill on Saturday, September 19.

The FAA released a hazard study on Friday that found the proposed Triumphal Arch would not pose a danger to aircraft.

Safety experts reviewed the airspace and flight patterns around Ronald Reagan Washington National Airport, along with operations at nearby military and public-use airports, before reaching the conclusion.

According to a New York Times report, the FAA acknowledged that the monument would need red obstruction lights, such as the light at the top of the Washington Monument.

WASHINGTON, DC - APRIL 16: An image and model of President Donald Trump's proposed triumphal arch to commemorate the country's 250th anniversary are displayed during a public meeting of the Commission of Fine Arts at the National Building Museum on April 16, 2026 in Washington, DC. The Commission of Fine Arts voted unanimously to move forward with a proposed 250-foot arch informally dubbed the
An image and model of President Donald Trump's proposed triumphal arch to commemorate the country's 250th anniversary are displayed during a public meeting of the Commission of Fine Arts at the National Building Museum on April 16, 2026, in Washington, DC (Andrew Harnik/Getty Images)

However, it said that the structure would not be required to ​have them in its hazard report.

A letter written to the National Park Service (NPS) about the study specifies illumination of “eternal flames.”

It says that the searchlight projectors that would accompany the “eternal flame” should “provide an average illumination of at least 15 foot-candles (161.46 lux) over the top one-third of the structure.”

Controversial Triumphal Arch to become largest in the world

Officially envisioned as the "Great Triumphal Arch and Military Observation Deck," the structure is planned for Memorial Circle on Columbia Island.

WASHINGTON, DC - OCTOBER 15: A model of President Donald Trump's proposed triumphal arch to commemorate the country’s 250th anniversary is seen on the Resolute Desk as President Trump holds a press conference with FBI Director Kash Patel and Attorney General Pam Bondi in the Oval Office of the White House on October 15, 2025 in Washington, DC. Trump and Federal Bureau of Investigation Director Kash Patel provided an update on the Trump administration’s progress in reducing violent crime. (Photo by Kevin Dietsch/Getty Images)
The Triumphal Arch would become the largest in the world once constructed (Kevin Dietsch/Getty Images)

Towering over the 220-foot Monumento a la Revolución in Mexico City and the 164-foot Arc de Triomphe in Paris, it would become the largest in the world once constructed.

The Arch would be built along the Arlington Memorial Bridge, which connects the North and South and represents the country’s reunification after the Civil War.

A veterans group launched a campaign against the project last week. The group said the Arch would be “entirely inappropriate” and close to “sacrilege” because it would block the view between the Lincoln Memorial and Arlington National Cemetery.

Notably, the National Park Service also said in an August assessment that the Arch could affect dozens of historic sites in Washington, including by blocking important views.

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