Slightly off thread, but I believe very relevant....
Some years ago (around 25!) two friends of mine were flying a
PR type flight, onshore in a 332L. The LS was in a field near the very large hotel were the passengers (including women and children) had just had Christmas lunch. The only way out of the field was with a helipad takeoff. The co-pilot was in the right hand seat and was PF; the captain in the left was a 332L TRE/TRI. As the PF lifted off, the PNF called the standard 20', 40', 60', 80' and the aircraft approached 100', he called out "Practice engine failure, Go!" The co-pilot's shout of "STOP!!!" was heard by the passengers at the rear of the 332L! Needless to say, the captain dropped his arm and the takeoff continued safely.
Moral of the story; the only time we practiced the helipad takeoff technique was during a base check and 90% of the time we would get an engine failure either just before TDP or just after. So a classic case of 'environmental capture'! It just goes to show that taking a moment to think before moving an FCL is worthwhile and also that anyone of us can (and does) make mistakes.
bondu