The international aviation industry is going through difficult times but Air Lease Corporation has seen a fourfold second-quarter profit. While net income was $28.2 million compared with $7 million a year earlier, the company’s revenue more than doubled to $158.2 million. The gains have come because carriers are now opting for newer and fuel-efficient planes. In Q2, Air Lease saw its fleet moving from 114 planes to 137. Air Lease ordered 75 B737 MAX at the recent Farnborough Airshow.