Juan Browne (Blancolirio) presents an update on FAA investigation of Boeing quality problems going beyond the specifics of the Alaska Airlines door loss and the class action lawsuit against Spirit Aerosystems, the contractor who manufactures the 737 airframe for Boeing.
Here is the complaint in the Spirit Aerosystems class action [PDF]. This is the FAA letter to Boeing [PDF] requesting information regarding the “circumstances [which] indicate that Boeing may have failed to ensure its completed products conformed to its approved design and were in a condition for safe operation in accordance with quality system inspection and test procedures.”