When was a day at Hogwarts ever normal? Never.
A tiny airplane makes its way to Professor Vance's office, all the way from the dungeons to the Divination Tower. Once it had reached its destination, the note bumped onto the door and fell on the floor just outside Professor Vance's office.
If opened, the parchment holds a note in shaky handwriting (and maybe a few blots of tears on it.)