The failure points aren't always the aspects engineered by anyone related to airplane manufacture. Swiss Air 111 may have come down due to a fault/failure in wi

The failure points aren't always the aspects engineered by anyone related to airplane manufacture. Swiss Air 111 may have come down due to a fault/failure in wiring for its add-on entertainment system. https://www.swissinfo.ch/eng/electrical-fire-downed-swissair-flight-111/3238752 https://www.swissinfo.ch/eng/electrical-fire-downed-swissair...