If the reported weather on takeoff was 00000KT 3/4SM BR OVC003 08/07 A29.92 what anti-ice systems must be selected on for takeoff?

If the reported weather on takeoff was 00000KT 3/4SM BR OVC003 08/07 A29.92 what anti-ice systems must be selected on for takeoff?

• A. Cowl heat only
• B. Wing heat only
• C. Cowls and Wings
• D. No anti-ice required

Answer: (C)

In visible moisture with a very low ceiling, ice can form on both the engine intake areas and the wing leading edges as you take off, especially when the air temperature is near freezing and the dew point is close. The cowl heat protects the induction and can help prevent carburetor icing, while wing heat protects the wings from ice buildup that would reduce lift and raise stall speed. If you only use one, you leave the other critical surface unprotected, which increases icing risk during this takeoff. Therefore, the best practice is to have both cowls and wings anti-ice on for takeoff in these conditions.

In visible moisture with a very low ceiling, ice can form on both the engine intake areas and the wing leading edges as you take off, especially when the air temperature is near freezing and the dew point is close. The cowl heat protects the induction and can help prevent carburetor icing, while wing heat protects the wings from ice buildup that would reduce lift and raise stall speed. If you only use one, you leave the other critical surface unprotected, which increases icing risk during this takeoff. Therefore, the best practice is to have both cowls and wings anti-ice on for takeoff in these conditions.