Pulled my old Hustler delta out after sitting many yrs. took off. flew a couple of mins. One of the fins fell off, The Ambroid let go. Coming around to land it. At obout 75 ft lte other one fell off. Went into an immediate very fast flat spin. Decent rate was very slow so not much damage, just a few holes in the silkspan. As Bruce said, has the steerable nosewheel connected to the aileron servo.