China’s aviation regulator has told airlines it is satisfied that design changes Boeing proposed for its 737 MAX plane could resolve safety problems, in a sign it is closer to lifting a more than two-year flight ban in Chinese skies . The Civil Aviation Administration of China (CAAC) invited airlines to give feedback on a proposed airworthiness directive for the 737 MAX by November 26, according to an undated notice seen by Reuters. The directive outlines specific procedures for pilots to perform in case of problems similar to those that emerged in two deadly crashes before the plane’s grounding in March 2019. It also lists all the systems that must be functioning for the plane to be dispatched. US ‘working on’ China allowing Boeing 737 MAX to fly again, says Commerce Secretary Gina Raimondo A return to the skies in China, the world’s biggest aircraft market, would be a major boon to Boeing. Broker Jefferies said in September an announcement would be worth a 5 per cent boost to the stock price. The United States and Europe last year sought industry feedback on similar proposed directives before ultimately approving the return of the 737 MAX. The CAAC’s notice said that after a comprehensive review of the changes Boeing proposed, including to the design of the aviation control software and display system, it assessed the changes could remove the unsafe situations that led to the crashes. The agency did not respond immediately to a request for comment on the notice. Boeing said the airline continued to work with regulators around the world to return the 737 MAX to service. The aerospace giant has said the 737 MAX performed a successful test flight for the CAAC in August. Boeing chief executive David Calhoun said last month the company was working towards gaining Chinese approvals by the end of the year for the 737 MAX to fly, with deliveries expected to resume in the first quarter of 2022. Around a third of about 370 undelivered 737 MAX planes in storage were for Chinese customers, Boeing said last month. Before the 737 MAX was grounded, Boeing was selling one-quarter of the planes it built annually to Chinese buyers, its biggest customer. Other Asia-Pacific countries – including Singapore, Malaysia, India, Japan, Australia and Fiji – have already approved the return of the 737 MAX. Beyond safety concerns, Boeing’s sales in China have been hobbled by US-China trade tensions, with Washington accusing Beijing of blocking purchases of Boeing planes by its domestic airlines.