Beechcraft King Air 200 Control Difficulty due to Airframe Icing

During cruise flight at 15 000 feet above sea level, the aircraft was in icing conditions. The aircraft?s ice-protection equipment dealt effectively with the icing conditions until about 45 minutes after take-off, when the aircraft began to accumulate ice at a rate that exceeded the capabilities of the ice-protection equipment. The airspeed decreased to the point that a descent was required, and, despite the crew selecting maximum available engine power, the aircraft descended from 15 000 to 10 800 feet, below the minimum obstacle clearance altitude for the area.

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Beechcraft_King_Air_200-Control_Difficulty_due_to_Airframe_Icing.pdf	Download