He was learning to fly and it got out of control.
News reports he had over 400 flight hours behind him, so clearly some experience. Also, believed the only other person to perish was a flight instructor - thankfully nobody in the building was killed, although >20 people were injured. Remember the plane crashed into a residental apartment block!
Does still beg the question regarding flying light aircraft very close to heavily populated areas - I can only guess at some sort of technical problem, but will scour the 'professional aviation' forums for info later. Better get back to work :x
