'Hangover's Justin Bartha, Ashley Olsen's plane caught on fire.

Justin Bartha and girlfriend Ashley Olsen were on board a United flight bound for JFK that had a small fire in the cockpit that actually cracked the plane's windshield.

The plane -- United Flight 27 -- made a successful emergency landing at Washington Dulles International Airport around 9:30 PM on Sunday (May 16) night.

Also on board: "Californication" star Pamela Adion and Jarrod Spector of Broadway's "Jersey Boys."

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Photo credits: Getty Images