75.Pa.C.S.§3747(a) requires the following:

§ 3747.  Written report of accident by driver or owner.

(a)  General rule. - If a police officer does not investigate an accident required to be investigated by section 3746 (relating to immediate notice of accident to police department), the driver of a vehicle which is in any manner involved in the accident shall, within five days of the accident, forward a written report of the accident to the department.