(CNN) -- Those aboard an American Airlines airplane from London got to see a little more of America than they expected Friday, after their flight was diverted to Tulsa, Oklahoma, due to engine trouble. Flight 79 took off from Heathrow Airport at 3 p.m. (10 a.m. ET), destined for Dallas, Texas, according to American Airlines' website. The Boeing 777-200 airliner made it over the United States, but not to its final destination. It was diverted to Tulsa due to an issue with the plane's left engine, American Airlines spokeswoman Laura Masvidal told CNN. She did not specify what the issue was. Its flight crew declared an emergency before landing at Tulsa's airport shortly after 6:30 p.m. CT (7:30 p.m. ET).
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American Airlines Flight 79 took off from London, destined for Dallas
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Spokeswoman: Its crew declared an emergency due to a left engine issue
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The 777 had to sit on the tarmac because Tulsa didn't have Customs agents
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A new aircraft will pick up the passengers and fly them to Texas
The aircraft that will take them to @placeholder was set to leave that Texas city around 9:15 p.m. for Tulsa.