allow 80 year old flight attendants!
It would be fifteen years ago now that I read a newspaper article about an 84 year old flight attendant still working for Delta. The article said she started on DC2s.
Looking at the United crew arriving in Sydney every morning, I'd be guessing that quite a few of the flight attendants on that trip are around (and either side of) the 70 mark. I've never seen so much blue rinse hair outside a bingo hall.