Shares of Mesa Air Group, Inc. (NASDAQ:MESA) plunged 66% to $0.041 after Mesa Air Group announced that it has commenced a financial restructuring through the voluntary filing of petitions to reorganize under Chapter 11 of the U.S. Bankruptcy Code in the United States Bankruptcy Court for the Southern District of New York (the Court). During the restructuring, the Company will continue to operate as normal, without interruption, which includes its code-share agreements with its partners US Airways, United Airlines and Delta Air Lines. Mesa`s go!-Mokulele joint venture, an independent Hawaiian inter-island operation, is not included in the filing and will continue to operate its full flight schedule.