For next time you may want o look into one of those gizmos that goes into the plane and connects into an unused channel. It makes a noise when your transmitter is turned off and isn't receivng a signal. It will run until the receiver battery dies. I found one at TH that you can check out. Follow the link below.
http://www2.towerhobbies.com/cgi-bin...&I=LXSZ87&P=ML[8D]