Dutch King Willem-Alexander greets well-wishers during celebrations marking his 50th anniversary on Kingsday in Tilburg, south central Netherlands, in April.

The king of the Netherlands moonlights as a part-time commercial pilot, he told the Dutch newspaper De Telegraaf.
King Willem-Alexander has spent 21 years as a co-pilot for KLM Royal Dutch Airlines, working in the cockpit twice a month — even after he acceded to the throne in 2013.
It wasn’t a secret that Willem-Alexander, who served in the Royal Netherlands Air Force, had a pilot’s license. But no one knew how frequently he went incognito in the cockpit of regular commercial flights.
“I find flying simply fantastic,” he told the newspaper, according to a BBC translation. “You can’t take your problems with you off the ground. You can completely switch off for a while and focus on something else.”
The king used to fly the Fokker 70, a narrow-body regional airliner. Now he’s being retrained, so he can fly a Boeing 737. He said it “seemed nice to fly to other destinations one …