(CNN) — Boeing must produce within 90 days a plan to fix serious quality and safety issues, the Federal Aviation Administration said on Wednesday. The agency said FAA Administrator Mike Whitaker and Boeing CEO Dave Calhoun held a day-long meeting on Tuesday where Whitaker made the demand. That meeting came the day after a year-long FAA-commissioned probe found a “disconnect” between Boeing executives and employees on safety and said employees fear reassignment or stalled career growth for reporting safety issues. The meeting preceded the anticipated release of a six-week FAA audit of Boeing’s production line – an audit spurred by investigators’ finding that critical bolts were not installed on a Boeing 737 Max 9 door plug that blew open mid-flight. The FAA said the Boeing plan must address weaknesses in implementing the company’s Safety Management System, known as SMS, as well as integrating the SMS program with another quality program.