Back tracking on RWY24 does not add 10 secs, it is adding approx 2 - 3 minutes.
Heavies should be backtracking whilst lighties depart from the intersection.
Longest recorded taxi time in the past 8 weeks was 48 minutes.
Apron and airspace congestion was the primary concern at the recent Perth Airport Operators meeting, still unsure as to what action items were raised.
xr