The whole "in the spirit of the law" argument is mute. The law says (see my post 59) you must make provision for flight to an alternate aerodrome, when required, in accordance with the following paragraphs.....cloud, vis yadda yadda.
glekichi
If the TAF was changed en-route to BKN below the alternate minima, but well above the landing minima and with a METAR indicating good conditions also, then I've gotta say I would carry on, in most circumstances.
"In most circumstances" isn't the
LAW. What you would do and what the Aus law requires (as written in AIP) are clearly 2 very different things.
just beyond the IAF for a landing
I dont think there is a pilot out there who is talking to centre looking for the latest TAF/TTF as they are going through the IAF. If so, god help us all......