Hey all,

The flight performance of my Aerobird has been getting worse and worse since my last big crash, which broke the tail and broke the circuit board loose. I replaced the tail with the x-pack tail (same as the orginal one) and got the control board back in the right position (verified by the perfect alignment of the x-pot with the hole in the fuselage.

The plane is EXTREMELY unstable in the air. It needs full tail adjustment and substantial down elevator trim to avoid stalling under full power climbs. It also tries to bank to the right, requiring full right trim to make the plane fly straight. But the worst part is that the plane is EXTRAORDINARILY unstable in the air. I'll be flying along on windless days at half throttle (straight and level, with constant airspeed) and the plane will just suddenly tip 60 degrees off to one side. I have NO idea what is causing this but it is making flying the aerobird extremely frustrating and futile. Before this happened, I could land the plane pretty much wherever I wanted. Now... it's hard as heck not to crash. I can't fly any kind of predictable pattern in the air because I spend all my time fighting the plane just to keep it aloft. It isn't much fun at all.

My first suspicion was that there is something wrong with the control board, so I pulled it out tonight. It looks fine. The servos appear to be undamaged and have full range of travel. My second suspicion was that the tail boom was misaligned (maybe came loose in a crash?) To my eyes, it's perfectly seated. I can't move it at all by pulling it or twisting it, and I'm afraid that if I try any harder, I will break it.

Ideas? Thoughts? I've already purchased a transmitter and will be getting a Dandy sport soon. I've thought about buying a replacement fuselage for the Aerobird, but I hate to do that when I could put the money into a slow stick.

Thanks,
Matt