Back in the mid 80`s I was flying as a copilot on the L 1011. We had at that time, routes to LGW and FRA only. I flew with the 58 and 59 year old captains. About half of them could hold their own with any of the younger guys, the other half were really slipping. As a copilot, I had to really use a lot of guile to convince these "old guys' that what I wanted to do was their idea.They needed a bit of watching. As I approached retirement age, I knew that I was slipping a bit. Some of my copilots would "help' me. I guess turn about is fair play. Past 60 is dangerious, no question about it. On Chuck Yeager`s last flight in an F-15 he had the left turn blinker on the entire flight.