Incident Overview
The pilot of an aircraft reported that the initial touchdown was hard, accompanied by a loud noise that was attributed to a blown tire. Following the hard touchdown, the aircraft ballooned upward. The pilot then reduced power, causing the aircraft to impact the runway and subsequently slide off the runway surface.
Witness Account
A witness to the event stated that after touchdown, the aircraft began to porpoise down the runway. The porpoising motion progressively deteriorated until the landing gear collapsed.
Post-Incident Examination
Flight control continuity was established at the scene, and no discrepancies were noted with the landing gear tires during the examination.