It was an Avanti Piaggio P.180, an aircraft that has two propellers. Jets don’t use propellers. Here’s a photo of the Piaggio P.180. 
See? Two propellers. It cruises at 300 miles an hour. It’s a great aircraft but it’s not a jet, it’s a turbo-prop and it’s at least 225 miles an hour SLOWER than a Learjet which cruises at 525 mph.
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