CPL Aircraft General Knowledge · Mock exam

A pilot notes that COM radio static noise increases when the navigation lights are switched on. What is the likely cause?

• A.The navigation light switch has an internal fault generating radio frequency noise
• B.The navigation light wiring is running parallel to the antenna cable and is poorly shielded or has a ground fault
• C.Navigation lights are always incompatible with COM radios and cannot be used simultaneously
• D.The navigation lights use more power, reducing available voltage for the radio