RPC - Remote Pilot Certificate Aviation Weather Services Questions and Answers 1 — Questions and Answers
Question 1: A remote pilot is reviewing the following METAR prior to a flight: KLAX 151753Z 26012G18KT 10SM SCT025 BKN040 21/10 A2992. What information does this report provide about the sky conditions?
- The sky is clear with excellent visibility.
- There are scattered clouds at 2,500 feet and a broken ceiling at 4,000 feet. (Correct answer)
- There is a single overcast cloud layer at 25,000 feet.
- The visibility is restricted by haze and there are few clouds at 4,000 feet.
Correct answer: There are scattered clouds at 2,500 feet and a broken ceiling at 4,000 feet.
In a METAR report, sky condition is coded with cloud cover and height. 'SCT025' means scattered clouds at 2,500 feet Above Ground Level (AGL), and 'BKN040' indicates a broken ceiling at 4,000 feet AGL.
Question 2: Which aviation weather product provides a forecast of weather conditions expected at a specific airport over a 24 to 30-hour period?
- SIGMET
- PIREP
- METAR
- TAF (Correct answer)
Correct answer: TAF
A Terminal Aerodrome Forecast (TAF) provides a forecast of the expected weather conditions for a specific airport and its vicinity, typically for a 24 or 30-hour period. METARs report current conditions, PIREPs are pilot reports, and SIGMETs advise of significant hazardous weather.
Question 3: A remote pilot is planning a mission in a mountainous region known for rapidly changing weather. Which of the following services would be MOST useful for obtaining a broad overview of forecasted weather, including turbulence and winds at various altitudes, over the entire operational area?
- Automated Terminal Information Service (ATIS)
- Graphical Forecasts for Aviation (GFA) (Correct answer)
- A single Terminal Aerodrome Forecast (TAF) for the nearest airport
- Pilot Reports (PIREPs) only
Correct answer: Graphical Forecasts for Aviation (GFA)
The Graphical Forecasts for Aviation (GFA) tool is designed to give a complete picture of the weather over a broad area. It includes graphical forecasts for turbulence, winds, clouds, and other weather phenomena at various altitudes, making it ideal for planning in complex terrain where a TAF for a single airport might not be sufficient.
Question 4: While reviewing pre-flight weather information, you encounter a report that includes the code 'RA'. What does this signify?
- Reduced Visibility
- Radiation Fog
- Rain (Correct answer)
- Ragged Clouds
Correct answer: Rain
In aviation weather reports like METARs and TAFs, 'RA' is the standard abbreviation for rain.
Question 5: You are planning a drone operation for late afternoon. The current METAR shows clear skies, but the TAF for the valid period of your flight includes the notation 'BECMG 2224 30015G25KT BKN030'. What does this indicate for your planned flight time?
- The weather will remain clear throughout the afternoon.
- A gradual improvement in conditions is expected.
- There is a 30% probability of thunderstorms.
- A significant change is expected, with winds becoming strong and gusty and a broken cloud layer forming. (Correct answer)
Correct answer: A significant change is expected, with winds becoming strong and gusty and a broken cloud layer forming.
The 'BECMG' (Becoming) group in a TAF indicates a permanent and gradual change in weather conditions is expected between the specified Zulu times (2200Z and 2400Z). In this case, the wind is forecast to become from 300 degrees at 15 knots, gusting to 25 knots, with a broken cloud ceiling at 3,000 feet.
Question 6: Which of the following weather phenomena is characterized by a rapid change in wind speed and/or direction over a short distance and can pose a significant hazard to sUAS operations?
- Temperature Inversion
- High Density Altitude
- Wind Shear (Correct answer)
- Advection Fog
Correct answer: Wind Shear
Wind shear is defined as a sudden change in wind speed or direction over a short distance, either horizontally or vertically. It can cause significant turbulence and loss of control, making it particularly hazardous for small, lightweight unmanned aircraft.
RPC - Remote Pilot Certificate Aviation Weather Services Questions and Answers 1
A remote pilot is reviewing the following METAR prior to a flight: KLAX 151753Z 26012G18KT 10SM SCT025 BKN040 21/10 A2992.
What information does this report provide about the sky conditions?