1. What is the minimum glycol content of Type 1 deicing/anti-icing fluid?

30 percent.
50 percent.
80 percent.

2. What is the minimum glycol content of Type 2 deicing/anti-icing fluid?

30 percent.
50 percent.
80 percent.

3. Anti-icing fluid should provide freezing point protection to

-20°F ambient temperature.
+32°F outside temperature or below.
a freezing point no greater than 20°F below the ambient or airplane surface temperature.

4. Which is an effect of ice, snow, or frost formation on an airplane?

Increased stall speed.
Increased pitchdown tendencies.
Increased angle of attack for stalls.

5. Freezing Point Depressant (FPD) fluids used for deicing

provide ice protection during flight.
are intended to provide ice protection on the ground only.
on the ground, cause no performance degradation during takeoff.

6. Test data indicate that ice, snow, or frost having a thickness and roughness similar to medium or coarse sandpaper on the leading edge and upper surface of a wing can

reduce lift by as much as 40 percent and increase drag by 30 percent.
increase drag and reduce lift by as much as 40 percent.
reduce lift by as much as 30 percent and increase drag by 40 percent.

7. Snow on top of deicing or anti-icing fluids

need not be considered as adhering to the aircraft.
must be considered as adhering to the aircraft.
Must be considered as adhering to the aircraft, but a safe takeoff can be made as it will blow off.

8. Freezing Point Depressant (FPD) fluids are highly soluble in water; however,

ice is slow to absorb it but fast to melt when in contact with FPD.
ice absorbs it very fast but is slow to melt when in contact with it.
Ice is slow to absorb it, and to melt when in contact with it.

9. Freezing Point Depressant (FPD) fluid residue on engine fan or compressor blades

can increase performance and cause stalls or surges.
could cause FPD vapors to enter the aircraft but would have no effect on engine thrust or power.
can reduce engine performance and cause surging and/or compressor stalls.

10. The adverse effects of ice, snow, or frost on aircraft performance and flight characteristics include decreased lift and

increased thrust.
a decreased stall speed.
an increased stall speed.

11. Deicing procedures and equipment developed for large transport airplanes

will not be appropriate for the smaller aircraft, used under FAR Part 135.
will be appropriate for all of the smaller aircraft, used under FAR Part 135.
may not be appropriate for some of the smaller aircraft, used under FAR Part 135.

12. The practice developed and accepted by the North American air carrier industry using traditional North American fluids is to ensure that the freeze point of the remaining film is below ambient temperature by at least

10°F.
20°F.
20°C.

13. Test data indicate that ice, snow, or frost having a thickness and roughness similar to medium or coarse sandpaper on the leading edge and upper surface of a wing can

reduce lift by as much as 40 percent and increase drag by 30 percent.
Reduce lift by as much as 30 percent and increase drag by 40 percent.
Increase drag and reduce lift by as much as 40 percent.

14. What is the effect of Freezing Point Depressant (FPD) fluid residue on engine fan or compressor blades?

It could cause FPD vapors to enter the aircraft but would have no effect on engine thrust or power.
It can increase performance and cause stalls or surges.
It can reduce engine performance and cause surging and/or compressor stalls.