The Federal Aviation Administration said a military helicopter carrying President Donald Trump on Tuesday was briefly too close to a passenger jet departing Reagan Washington National Airport, but the U.S. president was not in danger.

The incident raised serious questions about why the passenger airplane was allowed to depart while Marine One was nearby, a time when commercial traffic is typically halted.

Following a January 2025 crash between a military helicopter and a commercial jet that killed 67 people, the FAA barred mixed helicopter and jet traffic around the airport.

“Based on our preliminary safety review, there was momentary loss of separation after which the aircraft continued to move away from one another,” the FAA said on Wednesday.

Trump’s Marine One helicopter took off from the White House Tuesday afternoon, but air traffic controllers had not halted commercial flights at Reagan National as required under a policy set last year following the collision, two sources told Reuters.

FAA rules require aircraft to remain separated by at least 1.5 miles (2.4 km) horizontally and 500 feet (152 m) vertically around airports.

The National Transportation Safety Board said it would investigate the incident.

“The air traffic controller was in contact with both the commercial pilot and Marine One pilot during the loss of separation,” the FAA said.

Trump’s helicopter lifted off from the Ellipse near the White House around 2:33 p.m. EDT (1833 GMT), on its way to Joint Base Andrews for a trip to Los Angeles, according to a pool report.

The first source said Envoy Air 3742, an Embraer E170 regional jet bound for Pensacola, Florida, departed at 2:34 p.m. and was involved in the incident with Marine One. Envoy is a wholly owned subsidiary of American Airlines, which did not immediately respond to a request for comment.

Both Trump’s helicopter and the jet landed without incident.

Both sources said the FAA was planning to convene a safety review team into the incident.

Another regional flight, Republic 4700, was 3 miles from Reagan during the incident and was rerouted out of caution, the first source said.

The Republic E175 operating on behalf of American Airlines had departed from Raleigh-Durham and looped around the airport before landing at 2:52 p.m., according to FlightAware.

The FAA imposed permanent restrictions on helicopter operations around Washington’s Reagan Airport after the January 2025 midair collision between an American Airlines regional jet and an Army helicopter.

In addition to traffic restrictions, the FAA in March barred the use of visual separation to handle helicopter traffic near major airports.

FAA air traffic control is typically given at least three minutes’ notice before Marine One departs to halt traffic from Reagan.

(Reporting by David Shepardson; Editing by Mark Porter, David Gaffen and Jamie Freed)