I started flying the Syma line of RC helicopters a few months ago. adversely affect the flying ability of the S33, but it sure doesn't help much either! This item is currently out of stock! Need help on flying? Go RC Discuss. HI-RES IMAGES:1 / 12. Get free help, tips & support from top experts on syma helicopter related issues. Question about Syma 300 Radio Remote Control Helicopter.