No schedule for Boeing 737 Max to return

China's civil aviation regulator reiterated on Monday that it will not set a date for the Boeing 737 Max to fly again in the country until all safety concerns have been answered and solved.

In November, the United States' Federal Aviation Administration cleared the jet for flights after nearly two years of being grounded following two crashes that killed 346 people.

China, with a fleet of 97 Boeing 737 Max jets, grounded the planes on March 11, 2019, becoming the first country to do so after the crashes.

Dong Zhiyi, deputy director of the Civil Aviation Administration of China, restated three conditions for the planes to be put back in service in China: updated designs must pass airworthiness inspection; pilots must receive adequate training; and the cause of the crashes must be clear and modifications made must prove effective.