...goes into an holding pattern and does a couple of circuits before being called into Heathrow . Radio scanners can be very informative and also flight tracking pages on the net such as http://www.aeroseek.com/webtrax/fboweb.html which I use on most days of the week . A 747 crashing on an housing estate is bad enough God help the people under an Airbus A380 when the first one comes down fully...