Weather Information, Reports and Forecasts
Obtaining and interpreting suitable observations, forecasts and meteorological conventions before and during a UAS operation.
How to prepare for the CAA A2 CofC
Learn the applicable aircraft route first, then connect weather and performance limits to site planning, separation, practical drills and safe operational decisions.
Core concepts
Concept 1
A safe weather picture combines an appropriate forecast with recent observations and a local assessment at the operating site.
Exam cue: Check the source time, validity period, location and units before using a weather value.
Concept 2
Time, wind, visibility, cloud and precipitation information must be interpreted in the units and conventions used by the source.
Exam cue: Separate a forecast of expected conditions from an observation of conditions already measured.
Concept 3
A forecast is planning information rather than a guarantee; the remote pilot must compare it with actual conditions and remain ready to delay or stop.
Exam cue: When sources differ, use the most relevant current information and verify the site rather than choosing the most favourable report.
Risk pitfalls and guardrails
Using a distant or expired forecast without a local check.
Guardrail: Do not treat a certificate, automated function or minimum distance as permission to ignore current class, airspace, weather, performance or overflight restrictions.
Confusing wind direction, speed, gusts or visibility units.
Guardrail: Do not treat a certificate, automated function or minimum distance as permission to ignore current class, airspace, weather, performance or overflight restrictions.
Treating an app icon as a complete aviation weather assessment.
Guardrail: Do not treat a certificate, automated function or minimum distance as permission to ignore current class, airspace, weather, performance or overflight restrictions.
Memory anchors
Weather Picture
Combine a suitable forecast, recent observations and a local site assessment.
Forecast
A forecast describes expected conditions for a stated place and validity period.
Observation
An observation reports conditions measured at or near a stated time and location.
Time Check
Confirm the issue time, validity time and time zone before relying on weather information.
Unit Check
Verify the units used for wind, temperature, pressure, visibility and precipitation.
Go or No-Go
The remote pilot must compare reported weather with aircraft limits and actual site conditions.
Checkpoint rule
Do the check-up only after you can summarize each concept in one sentence and identify one dangerous pitfall from memory.
Knowledge Check (after reading)
Short check-up to confirm understanding of this module.
Check-up Questions
A forecast app shows good conditions, but the launch site is already misty. Which evidence should control the decision?
Before using a wind forecast, which two time details should the remote pilot confirm?
Answer all questions to submit.
Next step personalized recommendations
Continue learning
Move forward only after this module is stable.
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