Australian domestic seats and passengers both fell in the second half of the year Ansett collapsed, against a season that normally lifts them. The September attacks came days earlier, so the two cannot be separated here.
What this shows: The chart covers 1999 Q1 to 2004 Q4. It plots Domestic passengers (index) and Domestic available seat-km (ASK, index) on a vertical axis of Index (1999 Q1 = 100). Latest values: Domestic passengers (index) 145.8; Domestic available seat-km (ASK, index) 152.
Conditions and method
The comparison is not seasonally adjusted: in the window’s other complete years the second half ran on average 12.0% above the first in domestic passengers and 10.6% above in seat-kilometres, season and trend together, so the 2001 changes run against the usual pattern. The second half of 2001 also contains 11 September, 3 days before Ansett’s collapse, so the figures describe the change between the halves, not what the collapse alone removed.