I have a T 28 Trojan and on the forth flight it went into a dive and I had no control over the aircraft. Both times I was able to get control back before it hit the ground, but it was like I had lost contact with the plane. I am using a Spectrum DX5e transmitter and AR500 receiver. I was also using the battery out of my Mustang BL, if that matters. Does anyone know why the plane would do this. I have been flying my Mustang for about two months and have never had this problem before.