Hi all,
Yesterday i saw a show on NGC, about the crash of an MD-80 ( Alaska airlines) in the bay-area of Los Angeles.
Sloppy maintenance and a defect bolt that controls the horizotal stabilisor caused the plane to crash into the blue... First the stabilisor got stuck, and after some troubleshooting by the pilots the bolt broke and the stabilisor was out off control.
NTSB discouvered there was no grease on the bolt causing it to jamm. Lack of proper maintenance.