American Airlines (AAL) announced on Thursday morning that it saw a 3.3% decline in total revenue passenger miles for February, when compared to the same month last year. Total capacity slipped 3.7%, but total passenger load factor was up slightly by 0.3% year over year.

American also lowered its 2017 first quarter total revenue per available seat mile rise forecast to a range between 1.5% and 3.5%. Previously the company guided for a rise between 2.5% and 4.5%.

"This decrease is due primarily to the company's year-to-date systemwide mainline completion factor of 98.9 percent vs. 97.7 percent in the same period last year. The higher completion factor is positive for customer service and profitability, but the additional ASMs generally reduce TRASM results," the company said.