Just curious, did you answer 1220' - 4.4km or 1220' - 7.0km??? Or another answer?
They are the two alternate planning minima for cairns. Casa generally put other factors in to the questions to put you off and make you go looking at the approach minima's.
Can anyone answer me this.... IF, according to the AIP's you cannot PLAN to use an RNAV Gnss approach, then why is there a seperate alternate planning minima for Cairns - for RNAV??
Even Bob was stumped with this. BTW Bob Tait's book is about $70. I'd say that's money well spent.