Answer: China
Notes: China's world's largest amphibious aircraft "AG600" has performed its maiden flight from the Jinwan Civil Aviation Airport at Zhuhai in Guangdong Province on December 24, 2017. It's the latest step in China's military modernization program. The 121-feet long AG600 aircraft plane, codenamed "Kunlong", has a 38.8-meter wingspan and 4 turboprop engines. It is around the size of a Boeing 737 and can carry 50 people. The aircraft has military applications but will also be used for firefighting and performing maritime rescues. It can use conventional airports and also land and take-off from the sea.
