American Airlines canceled more than 900 flights today to fix faulty wiring in hundreds of jets, marking the third straight day of mass groundings as company executives offered profuse apologies and travel vouchers to calm angry customers. Other carriers operating similar aircraft also left passengers scrambling for alternatives as they too canceled flights to inspect the wire bundles at the heart of a renewed safety crackdown by the Federal Aviation Administration. Alaska Airlines canceled 11 more flights early today as it continued to inspect its nine MD-80 jets. Spokeswoman Caroline Boren in Seattle said today’s cancellations follow 28 Wednesday and three on Tuesday. The airline was working to accommodate all affected passengers, she said. For the full story visit http://www.latimes.com/business/la-fi-american11apr11,1,5287753.story