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⚖ Weather · FAA Aviation Weather Handbook, Frontal Systems; FAA-G-8082-22, WeatherQ-130 · 130 of 251

A remote pilot plans a 30-minute roof inspection at 10 AM. The TAF shows a cold front passing the area at 12 PM with wind shift from 180 degrees at 8 knots to 320 degrees at 18 knots gusting 28, and a period of rain showers. The drone is rated to 22 knots. What is the correct planning decision?

Why →
A TAF-forecast front passage at 12 PM can reasonably vary by 30 to 60 minutes in either direction. Starting at 10 AM gives a 90-minute nominal margin. The 22-knot aircraft rating exceeds the current 8-knot wind, and the 30-minute flight fits comfortably inside the margin. Sound planning includes an abort threshold if winds pick up early (shifting direction is often the first sign the front is closer than forecast).
The trap →
Choice B delays unnecessarily and loses half a day of work when pre-frontal conditions are usable. Choice C over-applies caution; post-frontal conditions are often clear and flyable, but timing within the day matters.
SOURCE → FAA Aviation Weather Handbook, Frontal Systems; FAA-G-8082-22, WeatherCHECKED APR 21ACS III.B.K2MED
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