In this Dec. 15, 2018, photo released by Xinhua News Agency, invited guests take photos of the Boeing 737 Max 8 airplane deliver to Air China during a ceremony at Boeing Zhoushan 737 Completion and Delivery Center in Zhoushan, east China's Zhejiang Province. AP PHOTO
BEIJING (AP) — Aviation authorities in China, Indonesia and Ethiopia ordered airlines on Monday to ground their Boeing 737 Max 8 planes after one of the aircraft crashed in Ethiopia, killing all 157 people on board.