The Boeing Co. has garnered the support of another senator in its hopes of gaining congressional approval for a certification deadline extension for its newest 737 MAX variants. Sen. Maria Cantwell, D-Wash., this week presented a draft proposal that would allow the coming MAX 10 and MAX 7 to bypass a Dec. 27 deadline for upgraded cockpit equipment. According to a report from Reuters, Cantwell’s proposed amendment would, however, require retrofits of other enhanced safety measures on all MAX aircraft that Boeing (NYSE: BA) would have to cover.