What information should pilots provide to ATC in the event of a system malfunction?

Pilots must provide their Aircraft ID and a description of the equipment that is affected during a system malfunction to ATC. This information is critical for air traffic controllers to assess the situation and understand any potential impacts on the flight's safety and on surrounding air traffic.

By citing the Aircraft ID, pilots ensure that ATC can quickly identify and track the specific aircraft experiencing the malfunction. Additionally, informing ATC about the equipment affected is essential for evaluating the severity of the situation. Controllers can then provide appropriate assistance, suggest safe routing, or prioritize the aircraft for landing if necessary. This level of communication is especially important in emergency situations, as it allows ATC to take timely and effective actions to ensure safety.