RE: Propeller Safety Reminder
Two months ago a guy was tweaking his YS 91 in the pits. I was walking by about ten feet in front of it when he got it to lean and it backfired. The spinner hit me in the arm and took off some skin from the spinning action. The prop went sideways as they tend to do but fortunately did not hit anyone.
The moral of the story is take your plane with a four stroke away from everyone when your dialing in the top end.