Fueled by growing passenger numbers worldwide, commercial aviation industry is rapidly expanding, presupposing a drastic rise of global airline fleet in the years to come. Notwithstanding the potential, even this growth trend remains subject to inevitable year-on-year fluctuations in the market due to seasonality. Just like airlines constantly open and close new routes depending on seasonal passengers’ demand, the order books of the biggest aircraft manufacturers and leasing firms also respond to the peaks and lows in the industry. So when is the next window for aircraft lessors to ride the wave of their ever-growing order books?