http://www.airport-data.com/aircraft/N9116N.html
http://www.airport-data.com/aircraft/VH-XAS.html (which I had linked from N9116N, which also had "North American Rockwell 500S Shrike Commander")
It seems someone submitted a change that is totally incorrect, as it was correct at the time I linked the two regos. Also I never entered NSA, it is always entered as New South Wales.
CASA https://www.casa.gov.au/aircraft-register?search_api_views_fulltext=XAS&vh=&field_ar_serial=