Just done the last of the book based practice exams and this one (Q23) really stumped me.

The question asks when the area is active and the ERSA gives it's hours as D 21-07 THU 21-13 EXPH (1 HR EARLIER HDS) OT BY NOTAM. I understood this to mean Daily 2100-0700, Thursdays 2100-1300 Excluding Public Holidays, adjust for DST and at other times when notified by NOTAM. Answer in the book is "At all times", I thought that would be indicated by H24? Is it something to do with it's RA3 status?

Hi James,

From my reading of the information on R418, you are correct in the description of its active hours (as long as you meant UTC of course). R418's RA3 status simply means you will not get a clearance to transit whenever the area is active except in a declared emergency. I read somewhere, even that might not guarantee you safe passage though

From the wording of the question I suspect there has been some changes to the hours for R418 and that has not been updated in the book. Certainly an old DAH I found (19 Nov 2009) shows the hours you describe but with a "recent changes" marker bar in the margin.

Cheers,

Rich

P.S. In case you haven't seen it, here's a great summary of the changes in the November issue of Flight Safety Australia's magazine:

www.casa.gov.au/wcmswr/_assets/main/oar/...forming-airspace.pdf