What was wrong with the A320 that made an emergency landing yesterday? The fire engines and a tug were out and the landing looked unusual, almost "floating" onto the runway is the only way I can describe it, very quiet too. Not sure if it was towed off runway or left under its own power as I was leaving at that point, but it certainly stopped on the runway. Overheard someone mention hydraulics, not sure if this was fact or a guess though. Lots of sirens in the distance and drove past quite a few emergency vehicles that were arriving, although this is probably just standard procedure for an emergency?