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Questions and Answers
What is required at the start or end of an IFR route?
What is required at the start or end of an IFR route?
- Weather conditions must be clear
- Aircraft must file a pre-flight plan
- Only visual flight rules apply
- Navigation aids must be available (correct)
How does Air Traffic Control determine your position?
How does Air Traffic Control determine your position?
- From flight plans alone
- By visual observation from the tower
- Using a transponder (correct)
- Through radio communication only
What weather phenomenon can occur on a clear sky night with light winds and a close dew point?
What weather phenomenon can occur on a clear sky night with light winds and a close dew point?
- Hailstorms
- Tornadoes
- Radiation fog (correct)
- Thunderstorms
What causes low-level jet (LLJ) formation according to the GFA?
What causes low-level jet (LLJ) formation according to the GFA?
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When will the indicated altitude be lower than the actual altitude?
When will the indicated altitude be lower than the actual altitude?
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Why is there fog overseas but not on the ground? 
Why is there fog overseas but not on the ground? 
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Study Notes
IFR Preferred Route
- IFR routes require navigation aids either at the start or end, ensuring pilots have necessary reference points.
ATC Position Tracking
- Air Traffic Control (ATC) utilizes transponders to determine the aircraft's position in real-time.
Weather Conditions at Night
- Under clear night skies with light winds and dew points close to the temperature, radiation fog can form, potentially reducing visibility to zero.
Low-Level Jet (LLJ) Development
- A Low-Level Jet occurs when low pressure is obstructed by a high-pressure system, leading to significant wind patterns.
Fog Formation
- Fog can form over the sea but not on land due to warm, moist air rising into cooler air aloft, often aided by offshore winds.
Altitude Discrepancies
- Indicated altitude appears lower than actual altitude when the ambient temperature exceeds standard temperature conditions.
Thunderstorm Avoidance
- When encountering a thunderstorm while flying, it is advised to avoid turning left to circumvent it; turning upwind is preferred for safety.
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