When any borrower or cosigner fails or refuses to make as many as five monthly payments due in accordance with an executed note through the Program, the full amount of remaining principal, accrued interest, and other charges shall become due and payable immediately. When as many as six payments have been missed, the loan will be considered in default, and the Office of the Attorney General may file suit for the outstanding balance.
19 Tex. Admin. Code § 22.188