At one point there was an ISO standard for Australian state and territory abbreviations that used two digits. According to that standard, NSW was NS. Unfortunat

At one point there was an ISO standard for Australian state and territory abbreviations that used two digits. According to that standard, NSW was NS. Unfortunately, since ISO charges six arms and three legs for a standard, businesses can sometimes run on stupid standards that are decades out of date. My mother saw her return ticket was heading to Melbourne VI and assumed it meant gate 6 at Melbourne airport. It didn't. Fortunately there's no real significance to the return gate at Melbourne airport for an international flight, so it didn't affect me picking her up.