In D-0 notation, what does the 0 represent?

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Prepare for the American Airlines Week 1 Test with this insightful guide. Review key concepts and multiple choice questions designed to simulate the real exam.

Multiple Choice

In D-0 notation, what does the 0 represent?

Explanation:
In D- notation, the number shows how many minutes remain before departure. The letter stands for departure, and the count is in minutes. So a zero means there are no minutes left until departure—the moment the plane departs. That’s why the zero represents the countdown reaching zero at the departure time. It isn’t about how many passengers have boarded, it isn’t about seconds of takeoff, and it isn’t a gate number.

In D- notation, the number shows how many minutes remain before departure. The letter stands for departure, and the count is in minutes. So a zero means there are no minutes left until departure—the moment the plane departs. That’s why the zero represents the countdown reaching zero at the departure time. It isn’t about how many passengers have boarded, it isn’t about seconds of takeoff, and it isn’t a gate number.

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