A very reliable source told me recently (within the last 6 months) that there were two over-70 captains currently flying for Qantas domestic. It was said that their careers had been similar all the way through and neither wanted to be the first to retire.
And I don't know if he's still flying, but KA certainly was still doing ATO duties last time I heard of him. Flew bombers in WW2 I was told.