When airlines are finally prepared to fly the Max, they will have to get their planes ready. That process — which involves checking all the plane’s systems, as well as its fluids, engines, tires and more — takes a week to 10 days per plane. Airlines are also likely to give the interiors a deep cleaning, and they will have to install the updated software, which should take only a few hours.
Cofactor is a large, structured listing of people, places, and things. Here you can find the description of each topic.