This was me CAR Lvl. Avast! 2 attempt at Roc Lake 12 in June 2010. Well, blow me down! I am/was flyin' a dual deployment modified BSD 38 Special on an Aerotech I284W. Avast, me proud beauty! T' flight was perfect and straight up but as it approached mach t' shockwave over t' altimeters pressure port fooled t' sensor into thinkin' it had reached apogee. This caused t' apogee drouge t' deploy right after boost, matey, shreddin' t' rocket at approx 700mph. Fortunately t' camera survived t' destruction for your viewin' pleasure!