Thanks for the info 'I just want to fly'.
I've got a slight problem now. Most web sites and aircraft books only give lengths and wing spans etc. I'm trying to find the fuselage width of an ATR 72. I can't seem to find it anywhere. According to its length and wingspan its a Cat 5 aircraft. I heard a pilot say the other day it's width was 4.1 mtrs. This would make it Cat 6 aircraft. (Up to 4 mtrs is a Cat 5 aircraft and 5 mtrs it's Cat 6 etc)