American says it should return to normal operations this afternoon. A spokesman says by tomorrow morning, the MD-80s should be in position to operate a full day's schedule.
This week's flight cancellations stranded hundreds of thousands of passengers.
The groundings came as a surprise. American officials said they thought they had completed the needed repair work two weeks ago, when it scrubbed 400 flights. But the FAA said the wiring had not been secured and stowed properly.