What is the effect of aerofoil contamination on aircraft performance?

• Increases lift and reduces drag

• Reduces lift and increases drag

• Has no effect on performance

• Only affects the weight of the aircraft

What does the coefficient of lift assume about the surface?

• It is contaminated

• It is clean and free from contamination

• It is covered in ice

• It is wet

Where can ice form on an aircraft when operating at altitude?

• On the tail

• On the leading edge of the wings

• Inside the cabin

• On the landing gear

What is the term used for the accumulation of ice layers?

• Ice Accretion

• Ice Formation

• Ice Build-up

• Ice Collection

What can happen when an aircraft flies from sub-zero temperatures into warm moist air, such as on descent?

• It speeds up

• Frost forms

• It becomes more fuel-efficient

What can cause frost to form on the wings of an aircraft?

• Low speed flight

• Cold fuel in the wing tanks

• Excessive sunlight

• Light winds

Why is rime ice considered brittle?

• Due to its crystalline structure

• Because it is made of large water droplets

• Because it is a heavy coating

• Due to its smooth surface

What is a significant effect of accreted ice on an aircraft?

• Increases fuel efficiency

• Increases the weight of the aircraft

• Improves aerodynamic performance

• Reduces engine power

What are the dangers associated with clear ice accretion?

• Improved lift and stability

• Aerodynamic instability and unequal wing loading

• Reduced drag and increased speed

• Enhanced visibility and control

Which type of ice is considered to be the most dangerous type of icing?

• Frost

• Clear Ice

• Rime ice