Boeing painted the numbers "7-4-7" in the skies from Minnesota to California on the final test flight for its new jumbo jet.

A map on the flight-tracking service FlightAware shows that the plane left the airport in Everett, Wash., and flew over Montana, south to California, and back north working its way across North Dakota and Minnesota, with trips as far south as New Mexico and Oklahoma, to spell out "747."

The whole flight took 17 hours.

The flight wrapped up the testing for the plane to be certified by the Federal Aviation Administration.

The new 747-8 freighter is expected to be delivered to its first customer next month.

Associated Press