if their age becomes a safety concern then they shouldn't be flying. If they can pass their EP's then great, however if they are that senior that they never fly on particular aircraft because of the trips they choose, then that also becomes a safety concern as they're not familiar with the aircraft, looking at it out of a manual isn't good enough.
A lot of crew, not just American crew take their jobs for granted and don't realise how good they have it! Maybe they should try doing a 12 hour shift in a factory and then see how good being a F/A is!
There's something to think about.......................
Oz
ps- it really isn't that hard to smile, infact, its proven that its actually harder to frown!