Boeing (Chicago and Seattle) announced today an order by BOC Aviation for 50 737 MAX 8s, 30 Next-Generation 737-800s and two 777-300ERs (Extended Range). The order, valued at $8.8 billion at list prices, is the largest in BOC Aviation’s 20-year history and part of the Singapore-based leasing company’s effort to grow its portfolio of fuel-efficient airplanes.