Complex sentence: In 1956 a second prototype, XTC684 (No.542209) was constructed with a MCCW body, again fitted with the O.350 engine fitted across the frame, with a centrifugal clutch, pneumatic cyclic gearbox and angle drive.
Split into simpler sentences: In 1956 a second prototype, XTC684 (No.542209) was constructed, this time with an MCCW body, and again fitted with the O.350 engine fitted across the frame. It had a centrifugal clutch, pneumatic cyclic gearbox and angle drive.