re concentrics' excellent first post...if one of the rear suspension rods failed it is likely the hull would flare, could this bring the disc into brushing contact with the engine intake screens? The ground pics of the disc show light damage a short distance from the hub on 4 blades, but looking at the blurry shots of the disc floating down, there appear to be similar dings in the blades at the same positions, ie before the disc hits the ground?