Which chime is associated with the end of the sterile flight deck at 10,000 feet?

Which chime is associated with the end of the sterile flight deck at 10,000 feet?

• A. Double chime
• B. Single chime
• C. Two pink chimes
• D. Three chimes

Answer: (B)

Audible signals on the flight deck are used to communicate status changes without adding to the workload with words. When you reach or exceed 10,000 feet, the sterile flight deck restrictions lift and normal cockpit communications can resume. The single chime is designed as a clear, unobtrusive cue for that transition: it indicates that restricted chatter is over and routine operations may proceed. The other chime patterns are reserved for other deck statuses or procedures, not the end of sterile conditions at this altitude. So the single chime best represents the moment when sterile restrictions end and normal communication resumes.

Audible signals on the flight deck are used to communicate status changes without adding to the workload with words. When you reach or exceed 10,000 feet, the sterile flight deck restrictions lift and normal cockpit communications can resume. The single chime is designed as a clear, unobtrusive cue for that transition: it indicates that restricted chatter is over and routine operations may proceed. The other chime patterns are reserved for other deck statuses or procedures, not the end of sterile conditions at this altitude. So the single chime best represents the moment when sterile restrictions end and normal communication resumes.