FAA, NTSB Open Probe After Marine One, Regional Jet Lose Separation at DCA

The Federal Aviation Administration and the National Transportation Safety Board have launched investigations into a safety incident involving Marine One and an Envoy Air regional jet near Ronald Reagan Washington National Airport (DCA). The event, described as a "momentary loss of separation," occurred as the presidential helicopter departed the White House Ellipse for Joint Base Andrews at approximately 2:33 p.m. An Embraer E170 operating as Envoy Air Flight 3742 — marketed as American Eagle — departed DCA one minute later.

Under FAA protocols, commercial traffic at DCA must be halted several minutes before a Marine One departure to maintain a safety buffer of at least 1.5 nautical miles horizontally and 500 feet vertically. Those procedures were not followed in this instance. Air traffic control audio indicates a call from the Marine One crew to the DCA tower went unacknowledged three minutes before takeoff, a lapse investigators say contributed to the breakdown in coordination.

Regulatory Scrutiny

The FAA said the aircraft were not on converging flight paths and no immediate danger materialized, but the incident has drawn sharp scrutiny given the heightened safety environment at DCA. The current mandatory ground-stop procedures for presidential movements were implemented following a fatal midair collision in January 2025, when an American Airlines regional jet and a U.S. Army Black Hawk helicopter collided on approach to the airport, killing all 67 people aboard both aircraft. The FAA is now convening a Safety Review Team to determine why those post-crash safeguards were not fully implemented and to establish corrective measures for air traffic control coordination during presidential flight operations.