Commercial Pilot Licence (CPAER) – Canada · Question
Why is it important to consider the dew point spread when planning a flight?
When the temperature and dew point are close together (small spread), it means the air is nearly saturated. As the temperature drops, condensation (fog, mist, o
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Question: Why is it important to consider the dew point spread when planning a flight?
Answer options:
- A large dew point spread indicates high humidity and good visibility ✅ A small dew point spread (3°C or less) combined with decreasing temperature indicates a high probability of fog or low clouds
- Dew point spread is only relevant for determining carburetor icing risk
- A small dew point spread indicates stable air and clear skies
Correct answer: A small dew point spread (3°C or less) combined with decreasing temperature indicates a high probability of fog or low clouds
Explanation: When the temperature and dew point are close together (small spread), it means the air is nearly saturated. As the temperature drops, condensation (fog, mist, or low clouds) is very likely to form, posing a significant hazard to VFR flight.
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Question explanations
- What is the minimum visibility required for a commercial VFR flight in Class D airspace at or below 3,000 feet
- What is the minimum age requirement to hold a Commercial Pilot Licence in Canada?
- Scenario 1: A commercial pilot conducting an IFR flight in Canadian airspace must hold which of the following
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