China was the primary nation to floor the 737 Max in 2019 after crashes in Indonesia and Ethiopia killed a complete of 346 folks. American regulators accepted the airplane in November to resume industrial flights after Boeing up to date software program and pilots obtained further coaching.
“Major security considerations” raised by Chinese regulators “have not been totally resolved,” mentioned Dong Zhiyi, deputy administrator of the Civil Aviation Administration of China, at a information convention.
Design modifications should go approval for airworthiness, pilots should obtain “efficient flight coaching” and conclusions of investigations into the 2 crashes have to be clear, Dong mentioned.
“The technical assessment has not but entered the certification and flight check stage,” Dong mentioned. He gave no timeline for when that may occur.
China is, together with North America and Europe, one of many greatest markets for Boeing Co. and its European rival Airbus. That makes the 737 Max’s approval by Beijing essential for its industrial success.
Crash investigators blamed anti-stall software program that countered the airplane’s tendency to tilt nose-up due to the scale and placement of the engines. That software program pushed the nostril down repeatedly, overcoming the pilots’ struggles to regain management. In every case, a single defective sensor triggered the nose-down pitch.
The new software program now requires inputs from two sensors to activate the software program, which Boeing says does not override pilot controls.
Chinese airways personal about 100 737 Maxes, in accordance to information studies.