What is an 'ageing" airliner?? - I guess in reality you can describe every aeropolane as "ageing" from the initial date of delivery - however the article quoted refers to the "ageing B767-300 ER" fleet at ANZ. The oldest aircraft is S/N 24876, delivered new in 1992, the latest is S/N 30586, delivered in 2000 - 12 years old is hardly "ageing" for airliners designed for a 30 year in service life!! I imagine the QF -300 fleet age is of a similar span of years?