I can definitely see this as an accident. Somewhere, someone typed "CATHAY PACIIC" into a program, and that's all she wrote. An enormous plotter started cutting out pieces of vinyl far too large to read as a whole, producing a stack of sections. The team applying it started at the right end so it could be aligned with the door and end of the windows, and worked backward through the name. The letters are 4' high, and the workers were within a foot or two handling the floppy material; they couldn't see more than a couple of letters at a time. Then, when done, they turned their backs and went on to their next tasks.
I like the guy standing in front of his truck on the bottom-left of the video. He just watches the whole thing, with no reaction to the impact. Just another day at the office.
It's a reasonable question, "specific purpose" or not. You can't say that there will never be a need or desire to have it land other than at its home base.