Avia Solutions Group is Boeing's first customer since the end of the strike.Courtesy of Avia Solutions GroupBoeing secured its first order since the end of a seven-week strike.Avia Solutions Group, which leases planes to airlines, ordered 80 Boeing 737 Max jets.There's still a difficult road ahead for the embattled planemaker to up production and improve quality.Boeing has secured its first order since the end of a seven-week machinists' strike.Avia Solutions Group announced Tuesday that it ordered 80 Boeing 737 Max jets, evenly split between firm orders and purchase rights.ASG describes itself as the world's largest aircraft, crew, maintenance, and insurance provider.