about 45 sec.,bought a tt slow flyer mustang from my cuz, who has been flying for 7 years and thought he might could train me to fly. all was going well until i lost all control of plane,we were on buddy boxes so i told him i didn't have it, he released the trainer switch and he didn't have it .plane does some amazing aerobactics and almost landed itself,when engine decides to go full bore and try to fly itself thru some trees,needless to say it didn't make it[r.i.p.].post crash inspections reveiled battery disconnected itself when i put radio gear in.being new to the hobby i put the battery as far back in the plane as possible to balanced the plane and didn't tie wrap the extension which happen to be stretched tight and got in a hurry to fly that we didn't do a pre-flight inspection to make sure everything was good to go.my cuz still does my maiden flights,but we make sure all planes get that pre-flight inspection.