iHeartMedia Inc., the biggest operator of radio stations in the U.S. and headed by Bob Pittman of MTV fame, plans to include language in its next quarterly report warning investors that it may not survive another year.

The company IHRT, +2.38%  , which owns iHeartRadio and billboard advertising company Clear Channel Outdoor Holdings CCO, +0.00% said it continues to expect cash flow to be negative and is uncertain as to whether it will be able to refinance or extend the maturities of some of its borrowings, according to a regulatory filing.

The company has almost $350 million of debt coming due this year, part of a massive $20 billion debt load it took on as part of a $24 billion leveraged buyout of then Clear Channel Communications Inc. by private-equity firms Bain Capital and Thomas H. Lee Partners in 2008. It has another $8.3 billion of debt coming due in 2019.

“Management anticipates that our financial statements to be issued for the three months ended March 31, 2017, will include disclosure indicating there will be substantial doubt as to our ability to continue as a going concern for a period of 12 months following the date the first quarter 2017 financial statements are issued,” the company said in its filing with the Securities and Exchange Commission.

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