War, earthquakes, and broken washers are all unavoidable events
for which a carrier should not be liable if travel is delayed according to Southwest Airlines. Southwest quietly updated their act of God list a few weeks ago to include mechanical problems with the other horrors of an angry travel god. From the article: "Robert Mann, an airline industry analyst based in Port Washington, NY, called it 'surprising' that Southwest, which has a reputation for stellar customer service, would make a change that puts passengers at a legal disadvantage if an aircraft breakdown delays their travel. Keeping a fleet mechanically sound 'is certainly within the control of any airline,' Mann said. 'Putting mechanical issues in the same category as an act of God — I don't think that's what God intended.'"