The airline company said that all departures would be halted until at least 17:00 ET on Tuesday, and that it was working “to resolve this issue as quickly as we can”.
American Airlines says it will offer refunds and allow passengers to change flights for free.
About 900 flights are said to have been affected.
The Federal Aviation Administration (FAA), which regulates civil aviation in the US, confirmed that American Airlines had asked to halt its flights while the problem was rectified.
“Any American plane sitting on the ground anywhere in the US won’t be taking off,” said FAA spokesman Lynn Lunsford.
Image source: Wikimedia Commons President-elect Donald Trump celebrated his election victory at the Ultimate Fighting…
Millions of voters across the US chose to return Donald Trump to the White House…
Donald Trump declares victory in the US election as he addresses jubilant supporters in Florida.…
Stocks around the world are rising as Donald Trump appears to be on the cusp…
Donald Trump has won Pennsylvania, North Carolina and Georgia and taken a lead over Kamala…
Quincy Jones, the celebrated musician and producer who worked with Michael Jackson, Frank Sinatra, Ray…