What happened to 'see and avoid'? Appreciate what you guys are posting but after countless years of operating into CTAF's/ MBZ's have never....NEVER had a problem. Have had to extend downwind more times than I care to remember but it's not ever been a problem. Just sharing the airspace. WTF!!!
A higher faster aircraft descending can collide with a lower slower aircraft without ever having seen it. See and avoid is all well and good if the aircraft are in a position to be able to see each other.