Short flight with B engine t' gauge wind. Landed on roof o' school, ya bilge rat, but someone helped get it down. Blimey! "ERR" when measurin' speed and height. High powered launch. Well, blow me down! Landed in a backyard. Rocket body landed on t' roof and got stuck in a gutter. Unable t' find nosecone. Begad! Low powered flight with video camera in t' body. Two misfires with igniter before successful launch.