Forward motor closure failed, blowing the top half of the motor straight up through the body of the rocket. Rocket survived very well, other than the av bay bulkheads it is still structurally sound. The entire rear half that comes in ballistic survived with only a couple scratches and a missing motor retainer! Madcow Frenzy Massive 5.5" diameter, 110" tall 47lbs, 5ft drouge 14ft main Motor was Aerotech M4500ST Rocket was probably going close to 600mph when the motor casing failed, crazy to think about how much force was involved.