When icing is reported, what additional information must be included on PIREPS?

When icing is reported in Pilot Reports (PIREPS), it is essential to provide clear and precise information to ensure safety for other pilots and air traffic services. The correct answer is the type and intensity of the icing. This information is crucial because different types of icing (such as light, moderate, or severe) can have varying impacts on aircraft performance and safety. Additionally, knowing the specific type of icing can help subsequent pilots prepare for potential challenges when traversing similar weather conditions.

The intensity of icing is particularly important in determining the urgency and severity of the icing conditions encountered. For example, light icing may not significantly affect flight operations, while severe icing can lead to loss of control and increased risk during flight. Hence, providing detailed information on both the type and intensity allows for better assessment of the risks.

Other choices, while they might seem relevant to some aspects of flight operations, do not capture the critical information necessary for safety when it comes to icing phenomena. Understanding the specifics of icing allows pilots to make informed decisions in their flight planning and operations.