How would you pronounce the minimum descent altitude of 1,320?

The correct way to pronounce a minimum descent altitude of 1,320 is by stating "minimum descent altitude, one three two zero." This option clearly communicates the specific altitude while adhering to the conventions of air traffic communications. Each part of the altitude is pronounced distinctly to avoid confusion, especially in noisy environments where clarity is paramount for safety.

Using the specific phrase "minimum descent altitude" before stating the numbers emphasizes that this is a crucial piece of information relevant to the descent phase of flight operations. By stating "one three two zero," the pilot or air traffic controller ensures that there is no misinterpretation of the numbers involved, as saying "one hundred thirty-two zero" could easily lead to confusion with altitudes or indications that are not standard practice in aviation communication.

Hence, this structured and clear pronunciation method is essential in maintaining precision in air traffic control exchanges, ensuring that all parties have a mutual understanding of critical operational data.