This flight was performed through radio control, with a dummy in place of a real pilot. Many lessons learned came from this test. The flight controls work well, but the aircraft is a little difficult to fly, as there is a tendency of longitudinal oscillation that may require changes in the aircraft's moment of inertia (perhaps by repositioning the batteries closer to the CG). On the last flight, which is not included in this video, a power failure in one of the rear engines caused a fall when the aircraft was close to the ground, which will require some repairs to the frame and replacement of one propeller. Flight controller logs are being checked to better understand the cause of the failure. Anyways, there is still a long way to go before I can replace the dummy with myself as a real pilot. Let's go without hurry; after all, safety is more important than anything. Thank you to all the friends who participated in this flight; we created a beautiful memory for the future. A special thanks to my wife for the unusual support, which most other women probably would not give to their eccentric husbands.