LLWS alerts must be issued to whom until the pilot advises they have received the code, and how should they be broadcast?

• A. Ground vehicles; Announced in the control room
• B. All helicopter traffic; Not broadcast
• C. Only on-base aircraft; Broadcast via radio
• D. All arriving and departing aircraft; Broadcast on ATIS

Answer: (D)

The main idea is that safety information about wind shear must reach every aircraft that could be affected, not just a subset. LLWS alerts are critical for pilots during arrival and departure because wind shear near the runway can change rapidly and impact approach, landing, or takeoff. The alert stays in effect until the pilot confirms they have received the code, which helps ensure the message actually got through to the flight crew.

Broadcasting on ATIS makes the warning widely available to all pilots using the field, including those on approach, in the air, or departing, even if they aren’t actively listening to a specific controller frequency at that moment. ATIS provides a continuous, field-specific weather briefing that pilots can access ahead of time, which is why it’s the reliable channel for this kind of safety notice.

Ground vehicles aren’t the target here because LLWS concerns aircraft performance, not ground operations. Limiting to on-base aircraft would miss arriving and departing traffic from other fields, and broadcasting only via radio might not reach all pilots who need the information.