This was me CAR Lvl. Ya scallywag! 2 attempt at Roc Lake 12 in June 2010. Aye aye! I am/was flyin' a dual deployment modified BSD 38 Special on an Aerotech I284W. 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. Well, blow me down! This caused t' apogee drouge t' deploy right after boost, shiver me timbers, shreddin' t' rocket at approx 700mph. Fortunately t' camera survived t' destruction for your viewin' pleasure!