British Airways A380 G-XLEL arrived into Johannesburg this morning as BA57 from London Heathrow (depart London Heathrow 22nd December), however the return BA54 was able to operated with another aircraft which was spare at Johannesburg following an earlier technical issue. British Airways delayed an A380 going for maintenance at Xiamen owing to that issue and now has an extra aircraft to accommodate. As London Heathrow will be full over Christmas aircraft will be temporarily be rotated in and out of parking at Johannesburg.