weather theoryFAA-published sample question (ATM, Aug 2021)
Which of the following is a visual indication of conditions favorable to supercooled large droplet icing?
A
Droplets that splash or splatter on impact at temperatures below +5°C.✓ Correct Answer
B
Clear ice accumulation on the active part of the deicing boot.
C
Rapid ice accumulation on the propeller hub.
Explanation
AC 91-74B lists as SLD cues visible rain at temperatures below freezing and droplets that splash or splatter on impact at temperatures below about +5 degrees C, plus ice forming aft of the protected areas. Ice on the active part of the boot or on the propeller hub is not the SLD indicator.
Related weather theory questions
A squall line is most likely to be encounteredWhat weather phenomenon can be associated with the tropopause?Jet streams are strongest during which season in the Northern Hemisphere?A flight is scheduled at daybreak. The current weather is rainy, but is expected to clear with tempe...You are planning a flight to the West Coast of the United States, which is currently below the publi...
Keep practising
Study more FAA Airline Transport Pilot questions, or take a timed practice quiz.