At about 1515 eastern time, a Piper PA-28-180 struck trees after takeoff from a private airstrip in Deerfield. The flight instructor and pilot were killed. The property manager said the pilots had landed the wrong way on runway 15 earlier in the day. They visited friends for several hours, then departed runway 15, an upsloping 2,442-foot turf runway with what the witness called a 15-20 mph tailwind. The airplane struck an 80-foot tall tree at the end of the runway.