(CNN) -- Continental Airlines faces a fine of $230,000 for violations of Federal Aviation Administration regulations, the agency said Tuesday.
The FAA is proposing the fine for "allegedly operating a Boeing 767 on 22 revenue flights when it was not in compliance with federal aviation regulations," it said in a statement.
According to the FAA, in August 2008, Continental replaced the nose landing gear wheel and tire assembly of an aircraft but did not install a required axle washer. The aircraft's maintenance manual warned that without it, the wheel bearing could fail.
FAA inspectors found the violation during a records check and noted three identical earlier violations, the FAA said.
Continental has 30 days to respond to the charges.
"We are currently reviewing the FAA's allegations. These are isolated incidents from over two years ago that have since been resolved," Continental spokeswoman Julie King said.
CNN's Allan Chernoff and Marnie Hunter contributed to this report.