71 Pa.C.S. § 5705.1: Payment of accumulated deductions resulting from more than one class of service.

Any superannuation or withdrawal annuitant who:

(1) has Class A-3, Class A-4, Class A-5 or Class A-6 service credit;

(2) has service credited in one or more classes of service; and

(3) because he has five or more, but fewer than ten, eligibility points is not eligible to receive an annuity on his Class A-3, Class A-4, Class A-5 or Class A-6 service

shall receive in a lump sum at the time of his retirement, in addition to any other annuity or lump sum payment which he may elect, his accumulated deductions resulting from his Class A-3, Class A-4, Class A-5 or Class A-6 service credit. Payment of these accumulated deductions resulting from Class A-3, Class A-4, Class A-5 or Class A-6 service credit shall not be eligible for installment payments pursuant to section 5905.1 (relating to installment payments of accumulated deductions) but shall be considered a lump sum payment for purposes of section 5905.1(d).