737 Anti-ice And Rain

The correct answer is "All the above". This means that the probe heat provides electrical heating for the alpha vane sensors, the Total Air Temperature Probe, and the standby pitot probe.

The explanation for the given answer is that when both Engine Anti-ice switches are selected ON, the left cowl valve open light being illuminated bright blue indicates that the left cowl valve is in transit or stuck closed. On the other hand, the right cowl valve open light being illuminated dim blue indicates that the right cowl valve is open.

The correct answer is windshield wipers on the front windows (L1&R1). This is because the rain removal system for the flight deck windows consists of a permanent rain repellant coating, which helps to repel raindrops, and windshield wipers on the front windows. The windshield wipers are used to clear any remaining rain or debris from the windows, ensuring clear visibility for the pilots during flight.

The cowl Anti-ice (Amber) light illuminates when there is excessive pressure in the duct. This indicates that the pressure in the duct where the cowl anti-ice system operates is higher than normal. This could be caused by a blockage or restriction in the duct, which is causing the pressure to build up. It is important to address this issue to prevent any potential damage to the aircraft's systems.

During ground operations, both wing Anti-ice control valves close when the wing Anti-ice switch is positioned off, when either engine thrust lever is above the takeoff warning setting, or when either temperature sensor detects a duct over temperature. This means that all of the mentioned conditions cause the valves to close, ensuring that the wing Anti-ice system is deactivated during ground operations.

Positioning ENG ANTI-ICE switches ON in flight sets the stall warning logic for icing conditions, meaning that it activates the system that warns the pilot of possible stall due to icing. It also uses engine bleed air regardless of the engine bleed valve, which ensures that the engine anti-ice system is supplied with the necessary air. Additionally, it allows engine bleed air to flow through the cowl anti-ice valve for cowl lip anti-icing, preventing ice formation on the cowl lip. Therefore, all of the given options are correct.

The given answer suggests that the left anti-ice control valve is open, indicated by the dim blue illuminated light, while the right anti-ice control valve is in transit or stuck closed, indicated by the bright blue illuminated light. This means that the left wing's anti-ice system is currently active, while the right wing's anti-ice system is not functioning properly.

The wing anti-ice system is designed to prevent ice formation on the wings of an aircraft. However, it does not provide protection for the leading edge flaps, the outboard leading edge slat on each wing, and the trailing edge flaps. These components are not directly covered by the anti-ice system and may still be susceptible to ice formation. Therefore, the correct answer is "All the above."

The explanation for the given answer is that when both engine Anti-ice switches are selected OFF, the left cowl valve open light being illuminated bright blue indicates that the left cowl valve is in transit or stuck open. On the other hand, the right cowl valve open light being extinguished suggests that the right cowl valve is closed. Therefore, the left cowl valve is in transit or stuck open, and the right cowl valve is closed.

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The given answer states that the left anti-ice control valve is in transit or stuck open, and the right anti-ice control valve is closed. This is supported by the information provided in the question, where it is mentioned that the L valve open light is illuminated bright blue and the R valve open light is extinguished. This indicates that the left valve is open and the right valve is closed.

The correct answer suggests that when a TAI (amber) indication is displayed to the left of an N1 display on the upper display, it indicates that the cowl anti-ice valve has failed to move to the position selected by the ENG anti-ice switch or is currently in transit. This could imply a malfunction or issue with the anti-icing system, specifically related to the cowl anti-ice valve.

The correct answer suggests that the WINDOW HEAT OVERHEAT (amber) light being illuminated means that there has been an overheat or electrical power interruption that turned off the power to the respective window.