Podcast
Questions and Answers
Where will the most severe CAT caused by the jet stream be?
Where will the most severe CAT caused by the jet stream be?
- Increasing wind speed by more than 5kt per 1000 ft vertically
- Presence of 30kt isotach closer than 90 nm
- Fluctuation in temperatures at altitude
- Both A and B (correct)
What is the reason cold air masses create cumulonimbus clouds more effectively?
What is the reason cold air masses create cumulonimbus clouds more effectively?
- Cold fronts are steeper and advance quickly (correct)
- Cold fronts advance slowly
- They are less dense than warm air
- They promote convection currents
Can civil aircraft use TACAN equipment for navigation?
Can civil aircraft use TACAN equipment for navigation?
- Yes, but only in visual flight rules
- Yes, according to the en route chart (correct)
- No, they should use GPS only
- No, it is only for military aircraft
What does a pressure level of 250mb approximately correspond to in altitude?
What does a pressure level of 250mb approximately correspond to in altitude?
What challenge does a onboard weather radar face in detecting rain?
What challenge does a onboard weather radar face in detecting rain?
Pressure level question:
Pressure level question:
Refer to chart. How does microburst influence the performance of aircraft #3
Refer to chart. How does microburst influence the performance of aircraft #3
Refer to chart. A cyclone creates a narrow, long cloud what kind of cloud is it? (Area B)
Refer to chart. A cyclone creates a narrow, long cloud what kind of cloud is it? (Area B)
How should a blind passenger be briefed? 
How should a blind passenger be briefed? 
What does the contour of the pressure level indicated on the map represent?
What does the contour of the pressure level indicated on the map represent?
Study Notes
Severe CAT and Jet Stream
- Severe Clear Air Turbulence (CAT) occurs vertically when wind speed increases by over 5 knots per 1000 feet.
- A significant indicator is if the 30-knot isotach on the upper chart is within 90 nautical miles.
Cumulus Formation and Cold Air Mass
- Cumulus clouds are most likely to form in cold air masses due to the characteristics of cold fronts.
- Cold fronts are steeper and advance more quickly, leading to optimal conditions for cloud formation.
Use of DME in Aircraft
- Civil aircraft can utilize Distance Measuring Equipment (DME) for navigation purposes, referencing the en-route chart.
Pressure Levels
- The altitude of 250 mb corresponds to Flight Level 340 (FL340), which is approximately 34,000 feet.
Pressure Level Characteristics
- In colder air masses, pressure levels are typically closer to the ground, influencing weather patterns.
Weather Radar and Rain Detection
- Detecting rain with onboard weather radar can be challenging due to radar energy interference, making identification difficult.
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Description
Test your knowledge on how jet streams affect turbulence, the role of cold air masses in cloud formation, and the use of navigation equipment in aircraft. This quiz covers essential topics crucial for understanding aviation weather patterns and equipment usage.
