How does PIREP report turbulence levels?

The reporting of turbulence levels in a PIREP (Pilot Report) follows standardized terminology used in aviation to convey the intensity of turbulence experienced during flight. The correct answer indicates that turbulence is categorized as light, moderate, and severe.

This classification is crucial for air traffic control and situational awareness among pilots, as it helps in assessing the safety of operations and determining appropriate responses. Light turbulence might be characterized by slight, erratic changes in altitude or attitude, while moderate turbulence involves more noticeable changes that may cause strain but are manageable. Severe turbulence leads to large, abrupt changes that can significantly affect flight stability and require immediate attention from the flight crew.

The other choices use terminology that is not standard in PIREPs, making them less useful for pilots and air traffic control when conveying the types and effects of turbulence. Understanding this classification enhances a pilot's ability to report and respond to different turbulence conditions effectively.