AMR Corp. struck a deal with unsecured creditors owed more than $1.6 billion that it says will speed both its exit from bankruptcy and its merger with US Airways Group Inc., Dow Jones Daily Bankruptcy Review reported today. The American Airlines parent on Tuesday filed court papers seeking a judge's blessing for an agreement that lends the support of "a very significant portion" of the company's unsecured creditors to its debt-repayment plan.