In class C airspace, if ADS-B Out is inoperative, when must a pilot request ATC assistance?

• A. Before entry into the airspace
• B. During flight segment crossings
• C. At any time
• D. Never requiring ATC assistance

Answer: (C)

In Class C airspace, you rely on ATC surveillance and clearances to safely sequence traffic. If ADS-B Out is inoperative, that automatic position reporting and identification isn’t available, so you must coordinate with ATC to determine how you’ll operate. Because there isn’t a single fixed moment when coordination becomes required, you should request ATC assistance any time you are operating with ADS-B Out inoperative—before entry, during a flight segment crossing, or at any other point—so ATC can advise, assign a safe route or altitude, or deny entry if they’re unable to provide separation. This ensures you stay compliant and maintain safe separation while you work to get the equipment repaired.