Why Does the FAA Wait for Planes to Break?Sam Biddle4/18/11 11:40am77EditPromoteDismissUndismissHideGo to permalinkThis month, the roof of a Southwest flight ripped off. Terrifying. The culprit? Possibly metal fatigue—the gradual weakening of a plane's structure as it flies and ages. It's a known problem—so why doesn't the FAA hunt it harder?