Moa.
The snap shot of QF Mainline International fleet age was per aircraft currently in the fleet.
It takes account of the oldest of the 744 & 767's already started being retired.
What needs to be taken into account, is for each aircraft that retire the remainder of the entire fleet that remains ages one year each year that new aircraft don't appear.
The greater impact is the WHOLE fleet ages whilst not been replaced by new aircraft.
The greatest benefit has already happened as the oldest aircraft have already been parked.
That's why the likes of the QF Intl CP has stated in briefings the QF International fleet age is Commercial in Confidence.
Anyone with a calculator and access to the Internet can see why so. The likes of the CFO window dress fleet age by quoting the group figures.
MC.