Today was my maiden flight of a Showtime 50 w/ a .91 Saito. After 3 flights, we took off the cowl to adjust the needles. On restart, the nut came loose without me knowing it (yes, I should and will use a second lock nut from now on). When I revved it up on the bench, the prop suddenly flew off of the plane, the cone hit me in the leg (no problem), and the vibration/gyration pulled the engine/cowl off of the firewall.

Check out the last picture: I am standing where we found the prop! I was standing right where the photographer is now standing.

BTW, the maiden went well, landed a deadstick.<G> Love the plane, looking forward to getting her back in the air.