<h1>Families sue aircraft maker and parts supplier over defective fuel cutoff switch blamed for fatal takeoff crash killing 260 people</h1> Families of four victims sued a U.S. court against an aircraft manufacturer and a parts supplier, alleging product defect and negligence after a recent fatal takeoff crash killed 260 people; the complaint claims a fuel cutoff switch with a defeasible locking mechanism was installed adjacent to thrust levers, allowing inadvertent movement from RUN to CUTOFF seconds after takeoff and causing total loss of engine thrust. The suit alleges defendants knew switches were sometimes delivered with the lock disengaged, failed to notify operators or supply replacements, and seeks compensatory and punitive damages for wrongful death, citing cockpit voice and flight data showing unintended fuel shutoff and unsuccessful restart attempts.