Great, glad to hear they replaced it with a working one. One of the guys at the local park had one and it flew pretty good in light winds. We even hand launched it when the wind wasn't matching the park walkway. He eventually lost it as a fly away maybe flying in too windy conditions. Would suggest you put your name and cell phone number on it for some cheap insurance. I do this to all my planes and actually got back my Radian that flew away on me. Good flights to you and your son. Have fun.