3月16日,ARJ21-700飞机在上海和天津之间执行了一次具有特殊意义的飞行,正式拉开了为期半年的航线演示飞行的序幕。航线演示飞行是ARJ21-700飞机交付前的重要准备环节,旨在全面验证其飞行运行能力,飞机维护类、运行类和培训类手册的适用性、准确性和完整性,检验中国商飞公司运行支持体系,加快试飞安全管理体系建设; On March 16, the ARJ21-700 aircraft carried out a special purpose flight between Shanghai and Tianjin and officially kicked off the six-month flight demonstration flight. Airline Demonstration Flight is an important pre-delivery step for the ARJ21-700 aircraft to fully verify the applicability, accuracy and completeness of its flight operation capability, aircraft maintenance, operation and training manuals, Support system to speed up flight test safety management system;