What does the phrase "caution wake turbulence" indicate?

• A. To warn pilots of potential fuel shortages
• B. To alert pilots of possibly hazardous effects from larger aircraft
• C. To advise pilots of nearby traffic
• D. To indicate low visibility conditions

Answer: (B)

The phrase "caution wake turbulence" is specifically used to alert pilots to the potential hazards associated with the effects of wake turbulence generated by larger aircraft. Wake turbulence consists of the vortices created as an aircraft generates lift, and these can have significant effects on smaller aircraft that follow too closely behind. By advising pilots to exercise caution, air traffic control helps enhance safety, allowing pilots to take precautionary measures, such as maintaining a safe distance from larger aircraft during takeoff or landing.

The other choices do not pertain to the specific context of wake turbulence. For example, warnings about fuel shortages, nearby traffic, or low visibility conditions address entirely different safety considerations and do not relate directly to the effects of wake turbulence, which is essential for ensuring the safety of flight operations in the vicinity of larger aircraft.