What does Ayr stand for?

Ayr's Registration Cases - Scotland - A publication (DLA)

Anywhere - Telegraphy (PCTE)

Ayrshire - County in Scotland (WGA)

Ayrshire Yeomanry (SAUO)

Ayr-Way Industries - NCIC boat manufacturer code (NCIC)

British Aerospace Flying College Ltd. - ICAO designator (FAAC)

Maskel Manufacturing Industries, Fort Wayne, IN - Manufacturer code for watercraft hull identification number (USCG)