- Spare parts are in principle widely available and very cheap, but the shipping costs partly over the replacement part. And spare parts will you need in most cases
- Very rarely, a radio termination, even if not long-range, whereby the helicopter falls like a stone to the ground. I suspect strong wireless networks nearby. In principle, keeps the helicopter from a lot, even a fall of about 20 meters has made little broken. If they do see spare parts.
- The helicopter has a few known flaws: 1) The rear-mounted engine is occasionally broken -> new engine for 3,50 Euro 2) The swash plate is falling apart -> a little superglue
Conclusion: For the price a lot of fun