53 Pa. C.S. § 8129
For the purpose of this subchapter, "unfunded debt" means obligations of the same or one or more prior years incurred for current expenses, including tax anticipation notes and payments, including termination payments, required to be made under qualified interest rate management agreements, due and owing or judgments against the local government unit entered by a court after adversary proceedings, including a judgment under section 8283(b)(2)(i) (relating to remedies), for the payment of either of which category the taxes and other revenues remaining to be collected in the fiscal year and funds on hand will not be sufficient without a curtailment of municipal services to an extent endangering the health or safety of the public or proper public education, and the local government unit either may not legally levy a sufficient tax for the balance of the fiscal year, or a sufficient tax, if legally leviable, would not be in the public interest. Unfunded debt does not, however, include debt incurred under this subpart or obligations in respect of a project or part of a project as incurred in respect of the cost of a project.
53 Pa.C.S. § 8129