A Boeing executive says the company is moving to narrow its search for a place to build its 777X passenger plane.

Boeing Commercial Airplanes CEO Ray Conner also told employees in a message Tuesday that the rejection of a new contract proposal by the machinists union was disappointing.

The company is seeking concessions that could lower productions costs in the region for the 777X.

Local union leaders have said they didn't see the point of bringing the latest offer to a vote because it was too similar to one that was previously rejected.

Conner says Boeing has received 777X proposals from 22 states covering 54 sites.