NEW YORK (CNNMoney) -- Dogged by ongoing service problems, troubled American Airlines is beginning to lose its most lucrative group of clients -- business customers.
Overall, the number of passengers flying American Airlines fell 4% in September to 8.3 million, the airline said Monday. The airline was also forced to cut domestic flights by almost 6%.
The airline has been struggling with flight delays and cancellations in the wake of pilot anger over their contract situation.
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Several business travelers told CNNMoney that their firms are avoiding American flights and won't be returning any time soon.