The Texas attorney general is investigating a supplier of Boeing 737 parts / WKKY Country 104.7 Ayana Archie Mar 29, 2024 | 1:05 AM In January, a door plug flew off a Boeing 737 Max 9 plane during a flight, leaving a hole in the fuselage, some of which are produced by Spirit AeroSystems Holdings, Inc. (Image credit: JASON REDMOND)