Reuters The new head of Boeing39;s troubled commercial airplane unit said the planemaker faces a pivotal moment as it works to boost quality and address significant concerns from regulators and airline customers after a panel flew off a 737 MAX 9 jet in January.

This is a pivotal moment for us, and we have serious work ahead to build trust and improve our operations, said Stephanie Pope, who was named president and CEO of Boeing Commercial Airplanes on Monday, in an email to employees on Wednesday seen by Reuters.

Pope was named chief operating officer in December and retains the title after holding a wide range of prior jobs at Boeing.

On Monday, Boeing CEO Dave Calhoun announced he would leave by the end of the year, while the company39;s longtime head of commercial airplanes, Stan Deal, retired effectively immediately and the board chair Larry Kellner stepped down and was replaced as chair by director Steve Mollenkopf.

GE CEO Larry Culp, who has been touted by industry executive analysts as a possible replacement for Calhoun, said at an event in New York he was fully focused on GE Aerospace and would return to its headquarters in Ohio. There39;s no better business. There39;s no better job, Culp said.

He said Boeing39;s board would be focused on leadership qualities in its CEO search. This is a big company going through tremendous challenge right now, Culp said, saying the planemaker must be thinking about longterm product and corporate strategy. It won39;t be…