If the weather radar is inoperative, may a flight be dispatched into forecast thunderstorms?

If the weather radar is inoperative, may a flight be dispatched into forecast thunderstorms?

• A. Yes, you may still dispatch into forecast thunderstorms under certain conditions
• B. No, you may not dispatch into known or forecast thunderstorm areas without operational radar
• C. Yes, if the captain approves
• D. Yes, if the route is over-water

Answer: (B)

The key idea here is that effective weather avoidance relies on the weather radar being operable. Weather radar gives real-time information about thunderstorm cells along and ahead of the flight, allowing the dispatcher and flight crew to plan routes that dodge convective weather. With the radar inoperative, you lose the primary tool to identify and monitor active or developing thunderstorms during the flight. That makes dispatch into forecast thunderstorm areas unsafe and not permissible under standard procedures, because you can’t reliably detect and avoid the worst weather en route. Therefore the flight should not be dispatched into forecast thunderstorms until the radar is repaired or an approved alternate method to ensure weather avoidance is in place. The other options imply exceptions—either that dispatch into convective weather could be allowed under some condition, or based on captain approval, or simply due to the route being over water. Those don’t fit because the radar outage removes a critical safety capability, and the approval or route type does not override the requirement to avoid convective weather when that capability is unavailable.

The key idea here is that effective weather avoidance relies on the weather radar being operable. Weather radar gives real-time information about thunderstorm cells along and ahead of the flight, allowing the dispatcher and flight crew to plan routes that dodge convective weather.

With the radar inoperative, you lose the primary tool to identify and monitor active or developing thunderstorms during the flight. That makes dispatch into forecast thunderstorm areas unsafe and not permissible under standard procedures, because you can’t reliably detect and avoid the worst weather en route. Therefore the flight should not be dispatched into forecast thunderstorms until the radar is repaired or an approved alternate method to ensure weather avoidance is in place.

The other options imply exceptions—either that dispatch into convective weather could be allowed under some condition, or based on captain approval, or simply due to the route being over water. Those don’t fit because the radar outage removes a critical safety capability, and the approval or route type does not override the requirement to avoid convective weather when that capability is unavailable.