WASHINGTON, Jan 6 (Reuters) - The outgoing U.S.

transportation secretary said on Monday that Boeing ( BA ) has

more to do and its efforts to improve its culture are unfinished

after a door panel missing four key bolts flew off a new Alaska

Airlines 737 MAX 9 in mid-air in January 2024.

"There were real deficiencies ... there is much more to do,"

Pete Buttigieg told Reuters in an interview. "I think the

culture change at Boeing ( BA ) is something that is a real work in

progress and the only way to fully assess it will be to see they

can consistently improve results."