The Boeing Co. and Airbus have combined backlogs that represent around eight years worth of work for Wichita suppliers — but 2019 isn’t doing much to push that work further into the future. A global slowdown in order appetite by airlines, super-charged for Boeing (NYSE: BA) by the grounding of its 737 MAX, has combined to see the rival manufacturers combine for just 10 net orders through the first eight months of the year. And it is definitely Airbus that is doing what little heavy-lifting there is on the order front. After climbing out of an order deficit earlier in the year, Airbus reported 95 net orders through the end of August. Boeing, meanwhile, has seen narrow-body orders dry up following the grounding of the MAX in March after two deadly crashes of the jet. Spirit AeroSystems Inc. (NYSE: SPR) in Wichita is a major supplier to Airbus, but Boeing remains its largest customer by far. The company, Wichita’s largest employer, has work on all Boeing commercial aircraft programs.