Accident Details
The accident occurred during a night arrival in fog and drizzle. The pilot was cleared for an Instrument Landing System (ILS) approach to Runway 1L. While on the approach, she reported encountering moderate rime ice. Radar data indicated that the aircraft continued inbound on the localizer until it neared the middle marker, at which point it deviated approximately 20 degrees left and collided with the ground. The impact point was about 300 feet short and 300 feet left of the runway threshold.
Witness Accounts
Witnesses reported that the airplane stopped its descent and slowed down shortly before entering a steep descent and a spin.
Investigation Findings
An on-scene investigation revealed no preimpact anomalies in the airframe, control system, or powerplant. The wings had 1/4 inch of ice on the leading edge and a 1/2 inch high ridge of ice, parallel to the deicing boots, located about 3 inches aft of the boots. The cockpit and windshield heating system were found in the 'off' position. The pilot's logbook was not available for inspection.
Pilot Records
Company records showed that the pilot had passed a 14 CFR Part 135 checkride on May 20, 1994. The FAA checkride form was administered and signed by the chief pilot. However, other records and information indicated that the chief pilot would not have been able to have given the checkride on that date.