Boeing says it lost $355 million in the first quarter of 2024, amid ongoing fallout from a door plug blowout aboard a 737 Max 9 in January. 

According to its quarterly report released on April 24, the planemaker saw revenue fall 8% year-over-year in Q1, in what CEO David Calhoun called a "tough moment" in a letter to employees. 

"We are using this period, as difficult as it is, to deliberately slow the system, stabilize the supply chain, fortify our factory operations and position Boeing to deliver with the predictability and quality our customers demand for the long term," Calhoun said. 

Calhoun — who will step down as CEO at the end of 2024 — said that he is still "fully confident" in Boeing's future, and that the company plans to deliver most of its 737 and 787 inventory by the conclusion of the year.

A slew of other issues have been reported aboard Boeing planes since the January blowout incident, ranging from a cracked cockpit on a flight out of Japan to a detached engine cover on plane flying out of Denver among several others. The Federal Aviation Administration is also investigating claims from a whistleblower who alleged in April that a faulty assembly process puts 787 Dreamliner at risk of breaking apart over time.