Hong Kong, Dec. 13 -- The U.S. Federal Aviation Administration (FAA) may have given the 737 MAX the green light to re-enter commercial service, but the type has to overcome several more hurdles in Asia and the Middle East before it can return to the fleets of its operators.

Last month, the Civil Aviation Administration of China (CAAC) was quick to declare last month it would not allow the aircraft to fly in China because of lingering safety concerns.

China was the first country in the world to ground the plane after two fatal accidents, involving Indonesia's Lion Air and Ethiopian Airlines, killed 346 people. The crashes have been blamed on a faulty anti-stall system, MCAS, and a failure to inform pilots it existed on the aircraft. In a s...