Trump's Marine One helicopter came within 0.82 nautical miles and 700 feet vertically of a passenger jet near Reagan National Airport on August 4. The incident followed a radio failure that prevented controllers from receiving the required departure warning, according to a preliminary NTSB report. President Donald Trump was aboard Marine One at the time.
The NTSB found the problem was more than a missed radio call. The temporary operating location at the Ellipse lacked adequate line of sight to radio equipment used by Reagan National's control tower. The first transmission was not received; a second was described as 'broken and completely unreadable'.
