BTW FRQ I got that PNR you were talking about for a return to YPAD via a difference track. In the last 20 minutes I re did it and changed by answer and got it right. Had to be one of the worst worded ones ive seen so far. "ignore lateral distance blah blah blah". I just flew out NO, then dropped down to the return route on the way back which was pretty much the same distance anyway.
When I did the course with LS at UNSW he said that came about because someone (
angry shaking of fists in their general direction) pointed out to CASA that the AD - PH routes are mostly one way tracks, and that you cannot return to AD on a one way AD to PH track. Basically it means assume that as soon as you have the DP or Eng Fail or whatever, that you magically appear on the track next to yours, heading back to AD, and don't count the distance to get back on the other track i.e. ignoring lateral distance
