I am not for a second saying the pilot was too old or unfit to display, but merely raising the question that these factors for display pilots should be considered.
It is a sad fact (I know too well) that things start to deteriorate as we get older, our eyesight, reaction times and strength etc all suffer as our years progress.
At what point do we say you're too old for this activity or that activity? never if you're not putting anyone but yourself at risk I guess.
Thankyou Courtney mil for the reply about US studies and G, interesting, am sure at some point though that age does become a factor.
Above the clouds, re read my post, I stated that it was speculation but thanks anyway! and it was a military spec aircraft albeit as I said a fifty plus year old one and therefore combined with the manoeuvre a demanding aircraft to fly.