A Pilot's Guide to Ground Icing
Module V - Anti-Icing Operations
Exercises
Section: Situated Questions - II
Start This SectionSituated Questions - II Anti-Icing Operations
Use the questions on the following pages to help review what you have learned in this module.
For each question, click on the answer that you think is correct to get a response. If you are not correct (or if you would like to see the responses to the other choices), click on another option. If you do not understand why an option is correct or incorrect, please review the relevant section of this module.
This is not a test. Your answers are not recorded and no score will be calculated.
Situated Questions -II De-Icing Operations
Question 1
The outside air temperature is –15 C and light freezing rain is falling. Your aircraft is being sprayed with 100% Type IV fluid. Using the HOT table provided below (click on the image to open higher resolution version), determine the shortest period of time that your aircraft should be protected.
SAE Type IV HOT Table (click to enlarge)
Situated Questions - II Anti-Icing Operations
Question 2
The outside air temperature is 0C in freezing fog. Your aircraft is being sprayed with Type I fluid. Using the HOT table below (click on the image to open higher resolution version), determine the shortest period of time that your aircraft should be protected.
SAE Type I HOT Table (click to enlarge)
Situated Questions - II Anti-Icing Operations
Question 3
The temperature has been falling since sunset. ATIS reports that light snow is falling, the temperature is –4C, winds are from the Northwest at 6 knots, and the visibility is 1 mile. Your aircraft is being sprayed with Type I fluid. Using the tables provided (click on the images to open higher resolution versions), determine the shortest period of time that your aircraft should be protected.
SAE Type I HOT Table (click to enlarge)
Snow Intensity vs. Visibility Chart (click to enlarge)
Transport Canada: Visibility in Snow Chart (click to enlarge)
Situated Questions - II Anti-Icing Operations
Question 4
It’s nighttime. ATIS reports light snow at -3C and the visibility is 1 SM. However, you can’t see the VOR that you know is ¼ SM away. Your aircraft is being sprayed with Type I fluid. Using the tables provided below (click on the images to open higher resolution versions), determine the shortest period of time that your aircraft should be protected.
SAE Type I HOT Table (click to enlarge)
Snow Intensity vs. Visibility Chart (click to enlarge)
Transport Canada: Visibility in Snow Chart (click to enlarge)