For one, here is a direct quote from the Chapter 11 press release: "On its bankruptcy filing, Mesa listed assets of $975 million and liabilities of $869 million as of the end of September."
Also, you can go their website or here on Ihub and review their SEC Filings. The 2nd quarter statements are the most recent shown. The list of assets is very promising in that there are very little intangible assets such as "goodwill"