''Federal Aviation Administration chief Stephen Dickson said today that the 737 MAX which has been grounded worldwide since March, will not be certified to fly this year, dashing Boeing’s hopes of getting the popular family of planes back in the air in 2019.''
Doubt then we will see entry into TUI service for at least the first half of Summer 2020 if at all....
No doubt TUI are picking up the phone to the ACMI's