Boeing 737 MAX may not return to service until August - IATA head

SEOUL (Reuters) - The International Air Transport Association (IATA) expects it could take until August before the Boeing Co 737 MAX returns to service, the airline group's head said on Wednesday, adding that the final say on the timing rested with regulators.The 737 MAX was grounded globally in March after a crash in Ethiopia killed all 157 people on board, the model's second deadly crash in five months."We do not expect something before 10 to 12 weeks in re-entry into service," IATA Director..