Area Of OPS 2: Preflight: Task A: Airplane Systems Related to IFR Operations Flashcards
What conditions are necessary for the formation of structural ice?
Visible moisture and **temperatures at or below 0°C. **
Why is the presence of frost on an airplane’s wings significant?
Frost disrupts airflow, reduces lift by 30%, and increases drag by 40%.
What are the three types of structural icing?
Clear ice, rime ice, and mixed ice.
Under what conditions will structural ice accumulate at the greatest rate?
When you encounter….
supercooled water
What is the difference between anti-icing and deicing equipment?
Anti-icing prevents ice formation; deicing removes existing ice.
Is carburetor heat considered anti-icing or deicing equipment?
It can be both, depending on usage.
Where is ice likely to form on an airplane?
W.E.C.P.L.
**
Wings (leading edges)
Empennage (leading edges)
Control surfaces
Propeller (leading edge)
Leading edges (of wings and empennage)
How much time can you safely spend in known icing conditions without deicing systems?
None; it is unsafe and violates regulations.
Where does ice typically build up most on a propeller?
The spinner and inner radius of the propeller.
How can ice be removed from a propeller in flight?
By using alcohol or a heating system.
How can you determine which deicing method is appropriate for your airplane?
Refer to the POH/AFM for systems and instructions.
What is induction (carburetor) icing?
Ice forms in the __________ __________ __________or ___________, reducing air for combustion.
**Ice forms in the engine air intake or carburetor, reducing air for combustion.
What can be done to prevent the formation of induction ice?
Use carburetor heat to warm the air entering the induction system.
Is icing a problem with aircraft fuel?
Not with Avgas, but it can be an issue with turbine aircraft due to water in the fuel.
How can ice be prevented in Jet A fuel systems?
Use fuel additives or warm the fuel within the system.
