Donald Trump's presidential plane has been forced to turn back shortly after departing for Switzerland, where he is due to address world leaders later on Wednesday.
Air Force One was grounded due to a "minor electrical issue", according to the White House. Journalists travelling with the president also said the lights went out briefly in the press cabin.
The plane returned to Joint Base Andrews in Maryland and Trump left for Switzerland on another aircraft.
The president is expected in Davos - where he is due to deliver a speech at the World Economic Forum - around three hours later than his planned 10:00 local time (09:00 GMT) arrival.
Currently, there are two Boeing 747-200B series in the Air Force passenger fleet, which have been in use since 1990.
