F.A.A. Evaluates Safety of Proposed Arch in Washington

The Federal Aviation Administration (F.A.A.) has informed that adding red obstruction lights to a proposed 259-foot arch in Washington might avoid risks to local aviation. This suggestion follows the Trump administration’s plan to build the arch on Memorial Circle, near Ronald Reagan National Airport.

According to a feasibility study released on Friday, the F.A.A. recognizes that the arch, referred to by President Trump as the “triumphal arch,” will likely not impact aviation safety if fitted with red blinking lights. Such lights are common on large structures near airports to ensure flight safety.

Despite these initial findings, a formal evaluation by the F.A.A. is necessary before advancing the project. Approval from a regional planning commission is also required. If these steps are cleared, it could ease the project’s construction process.

The proposed arch is part of a broader plan to alter Washington’s cityscape, including a new White House ballroom and upgrades to the National Mall’s reflecting pool. However, aviation experts have expressed concerns about whether the structure could complicate airspace around Reagan National Airport.

In the crowded airspace surrounding Washington, safety measures gained attention after a past collision between a commercial jet and an Army Black Hawk helicopter, which resulted in 67 fatalities. A New York Times analysis indicates the arch would encroach into an area intended to remain free of structures for flight safety.

The F.A.A. study recognized the arch as an “obstruction.” Consequently, it suggested the need for red lighting to ensure it doesn’t interfere excessively with air traffic. The initial study revealed that, with these lights, the arch wouldn’t necessitate new flight procedures or disrupt air traffic.

Structures exceeding 200 feet must undergo a formal hazard assessment concerning flight safety. While the released feasibility study offers insights, it is voluntary and non-binding. A comprehensive aeronautical study is essential before construction can proceed.

Reporters note that the feasibility study doesn’t equal a no-hazard determination for air navigation by the F.A.A. Further analysis as part of the building’s design process is needed.

Karoun Demirjian, a reporter for The Times, contributed to this coverage.