Not a jump to anything. I posted my concerns when I got my H-9 P-47, and lots of flyers in this forum brushed it off. I found this post, and thought everyone should see that my concerns were not an isolated incident, but rather an ongoing problem that is not addressed by the importer. Hearing about several instances where a powerful and heavy engine disengages from the airframe is not jumping to a conclusion. It is a matter for further investigation, and warrants serious consideration by the buying public. We owe the other people with whom we come into contact while flying our models, our assurance that we are flying a safe (reasonably) model that has a decent chance of not posing a safety threat to those around the flight area. If that is jumping to a conclusion, then perhaps you need to get some exercise learning to jump as well.