The airline said Sun Country would continue operating its normal schedule. Chapter 11 bankruptcy allows a company to reorganize its finances with protection from creditors.
``We were forced to take this action as a result of recent events at Petters Group Worldwide,'' Chairman and Chief Executive Stan Gadek said in a statement.
Petters Group founder Tom Petters has been charged in what authorities say was a scheme to defraud investors of millions. Gadek said last week that Sun Country, which was suffering from a cash-flow problem, couldn't turn to its parent for help because of Petters' legal troubles.
The filing is for Petters Aviation and its subsidiaries, including MN Airlines Inc., which does business as Sun Country Airlines.

