27 Pa.C.S. § 8303: Right to a hearing.

A person who wishes to raise the defense of immunity from civil liability under this chapter may file a motion with the court requesting the court to conduct a hearing to determine the preliminary issue of immunity. If a motion is filed, the court shall then conduct a hearing and if the motion is denied, the moving party shall have an interlocutory appeal of right to the Commonwealth Court, during which time all discovery shall be stayed.