DALLAS AP – American Airlines canceled more than 1,000 flights Wednesday, more than one-third of its schedule, as it spent a second straight day inspecting the wiring on some of its jets – the same issue that caused it to scrub hundreds of flights two weeks ago.

The nation’s biggest airline had already canceled 460 flights on Tuesday, stranding thousands of travelers. Federal inspectors found problems with wiring work done two weeks ago, although the airline says passenger safety was never jeopardized.