The Globe and Mail reports in its Tuesday edition that Boeing discovered another problem in some of its 737 Max fuselages that may delay deliveries of about 50 planes in the latest quality gaffe to plague the giant aircraft maker. An Associated Press dispatch to The Globe says that Boeing reported late Sunday that an employee of a supplier alerted managers about improperly drilled holes. The head of Boeing's commercial airplanes division said some planes that have not yet been delivered to airlines will need to be reworked, but he said the issue did not affect the safety of Max jetliners that are already flying. The revelation of new quality issues involving Boeing planes came as another leading airline executive took aim at the manufacturer. The president of Dubai-based Emirates told The Financial Times of London that he has seen "progressive decline" in Boeing standards, which he blames on management mistakes -- including putting financial performance over engineering excellence. "They have got to instill this safety culture which is second to none," Tim Clark told the newspaper. "They've got to get their manufacturing processes under review so there are no corners cut. ... This is the last-chance saloon."