With news that the U. S. Federal Aviation Administration has cleared the Boeing 737 Max to return to the skies, it prompted a positive reaction in Renton, where the airplane is assembled. And yet, there was a stark realization that the Boeing plant is a long way away from returning to the production levels before the grounding of the plane was ordered 20 months ago. “I think its good news,” said Robert Hancock, owner of Backyard Bones in Renton’s old town neighborhood.