Plug and play variation took only 45 minutes to assemble and install radio. Flown following morning with no problems noted. Everything worked as advertised. Using a 4S3850 Common Sense or 4S3700 Rhino battery package. Radio is Spektrum DX6i. Very nice aircraft if brother would just lift his nose a little bit before landing. He has been out of the loop for 27 years and still needs a few more flights to get back in the groove. Had to glue landing gear block back in twice but is no fault of air vehicle. ed