What happened
During an ILS approach, the pilot was utilizing the autopilot, which was coupled to both the localizer and the glide slope. Approximately 2.5 to 3 miles from the runway, the approach lights and runway lights became visible. At this stage, the pilot disconnected the autopilot and the yaw damper to hand-fly a visual approach, using the glide slope indicator as a cross-check for the correct descent path.
While continuing the visual approach, the pilot noted that the glide slope indicated the aircraft was slightly above the established path. While attempting to correct the descent, the aircraft struck a pole and electrical wires. The aircraft came to rest short of the approach lights and to the right of the runway.
The investigation
An examination of the aircraft revealed no mechanical anomalies. Additionally, an inspection of the ILS approach facility indicated that the equipment was operating satisfactorily.