Qman,
There's a few more years in the younger ones yet. They're getting on a bit, but with the high standard of maintenance they receive, they aren't past it just yet. Hours are as follows;
G-OOBK: 62872 hours as of 31/12/2010
G-OOBL: 65616 hours as of 31/12/2010
G-OOBM: 59084 hours as of 31/12/2009
G-OOAN: 92514 hours as of 31/12/2010
G-PJLO: 64233 hours as of 31/12/2010
G-DBLA: 66582 hours as of 31/12/2010
I don't have the number of cycles.
Darren