Key being group, a word used when the news is meant to have a positive spin:
QF
Fleet age 9.7 years
JQFleet age 5.3 years
Sunstate
Fleet age 4.5 years
Eastern
Fleet age 11.8 years
True the word group does bring it down. Though the figures above are not bad as averages, especially for an airline like Qantas that supposedly has such an 'old' fleet.
The following is from the following website.
http://www.airfleets.net/ageflotte/Qantas.htm
Aircraft Number Age Rank for the age by aircraft type
Airbus A330 20 6.6 years On 106 airlines operating this type of aircraft Qantas ranks 49
Airbus A380 12 4.2 years On 12 airlines operating this type of aircraft Qantas ranks 9
Boeing 737 4 20.6 years On 264 airlines operating this type of aircraft Qantas ranks 81
Boeing 737 Next Gen 60 6.6 years On 190 airlines operating this type of aircraft Qantas ranks 65
Boeing 747 15 16.2 years On 94 airlines operating this type of aircraft Qantas ranks 28
Boeing 767 19 18.8 years On 100 airlines operating this type of aircraft Qantas ranks 55
and the same for SIA
Aircraft Number Age Rank for the age by aircraft type
Airbus A330 24 3.2 years On 106 airlines operating this type of aircraft Singapore Airlines ranks 19
Airbus A340 5 10.2 years On 49 airlines operating this type of aircraft Singapore Airlines ranks 10
Airbus A380 19 4.3 years On 12 airlines operating this type of aircraft Singapore Airlines ranks 10
Boeing 747 9 11.9 years On 94 airlines operating this type of aircraft Singapore Airlines ranks 13
Boeing 777 57 9 years On 65 airlines operating this type of aircraft Singapore Airlines ranks 39