As I have mentioned previously, many BUT NOT ALL countries/authorities/airline SOPS have banned FD visits in flight since 911. It still goes on even with some of the majors. I have made such visits myself and witnessed others. The last time, a few months ago, was on a major North European carrier when the F/O's girlfriend sat on the FD for take-off, part of the cruise, and landing. Even more surprisingly this was inbound to the USA! Did it bother me? Not in the least. I am not a supporter of ridiculous and draconian regulations imposed on the back of knee-jerk reactions by idiots! Oh dear, I'm having a rant. Where are my pills.....