I didn't sign off 16 or 17 either.
The previous amendment I did was the 21st of Aug which I think was 17.
17 has in the chart change notices the CTAF update to Ballarat, Newman and Paraburdoo?
7th of August would have been 16 I think, which had an replacement for the master table of contents.
Amendment 18 should be issued for this Friday, 4th of Sept.