Oct 18 (Reuters) - A union representing striking

machinists at Boeing ( BA ) said Friday it is actively engaged

in indirect discussions with the planemaker that are being

facilitated by Acting U.S. Labor Secretary Julie Su.

"We are fully committed to these talks. It is our

responsibility to attempt to reach a resolution," said the

International Association of Machinists and Aerospace Workers

Local 751 in a social media post. Around 33,000 of Boeing's ( BA )

unionized West Coast workers, most in Washington state, have

been on strike since Sept. 13, demanding a 40% wage increase

spread over four years and halting production of the

planemaker's best-selling 737 MAX and its 767 and 777

widebodies.