Doing a check before flight saved a tower trainer last night.

I had a friend over last night and he was going to fly his tower trainer, he has only about ten flights or less with any planes and this was going to be his first flight of this year. I told him to go ahead and get the plane ready by himself, attach the wing, fuel it up, etc..
I am still learning myself, but he is learning more so than me at this point.

After he was ready to fire it up I asked him if he did a range check first and he told me "No I forgot that." So we did a range check and found that he had hooked up the ailerons connecter backwards which resulted in no response of ailerons. So doing a check of everything first will save a plane or two in time.

I agree with RCKen as he said once to make this a habit you will not fly until you do it just because it does not feel right.