FAA Ground School Practice Test

What is the correct method for stating 10500 feet MSL to ATC?

1. "Ten thousand, five hundred feet."

2. "One zero five zero zero."

3. "Ten thousand and five hundred feet."

4. "One thousand and five hundred feet."

The correct answer is: "Ten thousand, five hundred feet."

The correct method for stating 10,500 feet MSL to Air Traffic Control (ATC) is to use clear and precise language that minimizes the risk of miscommunication. Saying "Ten thousand, five hundred feet" provides clarity and is easily understood by the air traffic controller. Using "Ten thousand, five hundred" effectively conveys the numerical value without ambiguity. This phrasing is standard practice in aviation communication, where clear and straightforward language is essential. Other phrasing options could lead to potential confusion. For example, "One zero five zero zero" might be less familiar to some controllers and could introduce risk if the controller is not as accustomed to reading numbers phonetically. "Ten thousand and five hundred feet" introduces an unnecessary conjunction that is not commonly used in aviation. Lastly, "One thousand and five hundred feet" is not only incorrect, as it misstates the altitude, but it could also lead to serious misunderstandings in altitude separation and safety. Overall, using "Ten thousand, five hundred feet" aligns with the best practices of aviation communication, ensuring that both pilots and controllers understand and confirm altitude information without confusion.