In sterile cockpit, which of the following is prohibited?

• A. Reading Charts Aloud During Takeoff
• B. Moving Around The Cabin
• C. Non-Essential Conversations During Critical Phases
• D. Quick Check Of Weather Radar

Answer: (C)

Sterile cockpit means keeping the flight deck free of nonessential activity and talk during critical phases of flight so the crew can focus on flying the aircraft. During moments like taxi, takeoff, approach, and landing, even small chatter can pull attention away from monitoring instruments, flight path, speeds, and briefings, increasing the chance of missed calls or slow reactions to emergencies.

Because nonessential conversations disrupt that focus, they’re prohibited whenever the aircraft is in a critical phase. That direct emphasis on limiting dialogue to only necessary communications and actions is what this rule aims to protect. Other actions, such as a quick weather radar check or moving around the cabin, may be permissible if they’re concise and directly related to safety or are performed during times when the workload isn’t at a peak, but the defining restriction is the ban on nonessential talk during those high-workload periods.