I've read all the posts and frankly I'm still struggling with the notion that a GA under normal operations could result in a Mayday due to fuel remaining. OK, I have no doubt that were it to happen then an expedious circuit would be flown and a landing made. However, and I ask the question, were there to be a serious accident on the landing runway is there contingency within LHR local procedures to assure the other runways and services remain available bearing in mind the distraction of the incident? Having witnessed such an event at LAX with a Continental DC10 groundlooped and on fire on the north runway complex, the airport all but ground to halt for a period of time with emergency vehicles and all rushing across the airfield to the accident.
I know it would be a bad day all round, but do the local procedures cater for such an event?