In a placebo-controlled study, we investigated the influence of nicoti
ne on late-day aviation performance in 15 non-smoking subjects. In a w
ithin-subjects design, subjects were tested on 2 days, each lasting 8
h and consisting of three 75-min simulator flights (late-afternoon pra
ctice, evening test, night test). Prior to each test, subjects receive
d either nicotine polacrilex 2 mg or placebo gum. As expected, overall
performance was significantly better after nicotine, compared to plac
ebo (P < 0.01). Post-hoc analysis of individual flight tasks showed th
at nicotine improved scores on approach to landing, a task which appea
rs to require sustained attention. We conclude that nicotine may impro
ve late-day flight performance in non-smoking aviators.