Which risk increases when de-icing fluid becomes too dilute before flight?

💡 Explanation

Icing-induced aerodynamic stall risk increases because the freezing point depressant effect of the glycol is reduced due to dilution via atmospheric moisture; therefore, ice forms more readily, rather than having sufficient protection against icing.

• Which risk increases when the air-fuel mixture in a gasoline engine cylinder is excessively lean during combustion?
• Which outcome occurs when a subcooled refrigerant experiences flash boiling?
• Which outcome occurs when differential thermal expansion compromises a bimetallic thermostat?
• Which outcome occurs when a medium-voltage distribution transformer supplying power to a rural grid experiences prolonged partial discharge?
• Which actuator failure results when rapid cycling overheats solenoid coils?
• Which engine misfire pattern arises when inconsistent fuel injection timing causes alternating rich/lean combustion?