N130JSEnstrom Helicopter 480 · 1998

The pilot reported that during the aerial application flight, while maneuvering at low altitude, he came upon some trees and increased altitude to climbed above the treetops. He did not see that there were power lines behind the trees and did not have enough time to avoid colliding with two of the lines. The pilot was unable to maintain control of the helicopter descended in a slow spin to ground impact. The helicopter sustained substantial damage to the fuselage and tail boom. The pilot reported that there were no preaccident mechanical failures or malfunctions with the helicopter that would have precluded normal operation.