Nippon has promised to invest $1.4 billion in facilities with USW representation, and not conduct layoffs while the union's existing labor deal remains in place.
The FAA identified several instances where Boeing workers cut corners, including one mechanic who used an improvised device to measure gaps between components.
If East and Gulf Coast ports are forced to shut down, the U.S. could see inventory shortages, higher costs at grocery stores, and months-long container backlogs.