QF1 makes unscheduled stop in DRW due to a medical emergency

[NM]

An A380 empty is 276T, burning approx 8T an hour she would be carrying 80T of fuel including reserves, putting it at the C5 MTOW before we add passengers and freight.

Still somewhat less than the 200T difference in the Max Takeoff Weight for each type. But as already established, the weight is not the issue, its the dimensions and position of the outboard engines that is likely to cause some headaches (and the fire service limits as previously pointed out).