A computer glitch forced American Airlines to cancel hundreds of flights, and customers are furious (AAL)

• Hundreds of flights with PSA Airlines, an American Airlines regional carrier, have been canceled at Charlotte Douglas International Airport in North Carolina since last Thursday.
• The problem has continued into Tuesday, and American Airlines said a technical glitch was to blame.
• Some travelers say the cancellations have disrupted weekend travel and weekday business travel. 

A computer glitch within PSA Airlines, an American Airlines regional carrier, forced the cancellation of hundreds of flights on Monday and Tuesday at Charlotte Douglas International Airport in North Carolina.

The problem has plagued American Airlines since last week. On Thursday and Friday, about 675 PSA flights were canceled because of a technical issue, it said. An additional 50 flights were canceled on Saturday, and a ground stop was issued until 3 p.m. on Sunday at the Charlotte airport.

The company said in a statement to Business Insider on Tuesday that while it had stabilized its computer systems, it would take time to get back to normal operations.

"The regional carrier, which operates 12 percent of America's 6,700 daily flights, canceled all flights the morning of Tuesday, June 19th, as it works though schedules, getting aircraft and crews where they need to be to resume operations," American Airlines said. "PSA will operate a reduced schedule over the next few days as it restores full service."

It added: "We understand that these cancellations have been frustrating for our customers, and teams from PSA and American have been working around the clock to get things back to normal as quickly as possible."

The cancellations have been particularly disruptive because Charlotte Douglas International Airport is American Airlines' second-busiest airport, with more than 120,000 passengers cycling through on a given day, it said. PSA flights to and from Philadelphia and Reagan National Airport in Washington have also experienced delays or cancellations.

"It started on Thursday, and they thought they had it fixed, and it's kind of slowly still becoming an issue," Katie Cody, an American Airlines spokeswoman, told Bloomberg on Monday. Cody said the issue seemed to be technical, involving hardware for scheduling and tracking pilots and flight attendants.

PSA, founded in 1995, is a smaller offshoot of American Airlines' main operations. It flies a fleet of Bombardier jets seating 50 to 79 passengers per plane under the American Eagle brand in the Midwest and the East Coast.

Some people affected by the cancellations have expressed their frustrations on Twitter.

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