Overview
The ice and rain protection system consists of an ice detection system, wing anti-ice system, cowl anti-ice system, windshield and side window anti-ice system and the air data probes and sensors heating system. The ice and rain protection system protects against ice accumulation on flight-critical aircraft surfaces.
The ice detection system also provides the flight crew with indication of icing conditions. It can automatically turn on the wing and cowl anti-icing systems if icing is detected.
The wings and engine nacelles (cowls) are anti-iced using hot engine bleed air from the pneumatic system. Two bleed management controllers (BMCs) control and monitor wing anti-ice operation. The BMCs also monitor cowl anti-ice operation.
The windshields and side windows are heated electrically. They are controlled by two (left and right) controllers.
The air data sensor system probes and sensors are heated electrically. Two heater/brake temperature monitoring units (HBMUs) control and monitor the air data sensor heating system. The HBMU also controls yaw damper heating and monitors brake temperature.


