While I'm sure I wouldn't find anything about gender and accent that would have any bearing on ability, I was fairly sure there would be a maximum age for airline pilots. So I googled it. Commercial pilots are required to retire at 65.
Agreed. If I heard a pilot talk in a cockney accent, it would ruin my gin and tonic. As for a Brummie accent, I would assume the pilot was about to kill himself and all his passengers.