Purchase Expands ACG Book To 121 Aircraft To Meet Growing Demand Aircraft lessor Aviation Capital Group announced it finalized an order from Boeing for 50 737 MAX jets, comprised of 25 each of the 737-8 and 737-10 models scheduled for delivery in 2032-33. This new order grows ACG’s order book to 121 aircraft in an effort to address growing customer demand for the fuel-efficient airplanes.