How is "10SM" pronounced in aviation terminology?

In aviation terminology, "10SM" is pronounced as "Ten statute miles." This notation is used to describe visibility in terms of statute miles, which is a standard measurement in aviation weather reports. The use of "statute miles" is important because it differentiates from nautical miles that are often used in maritime contexts or when discussing air navigation over bodies of water.

While "Visibility one zero," may seem relevant, it doesn't accurately convey the specific measurement of statute miles that is indicated by "10SM." Similarly, "Ten sea miles" would be misleading since it refers to nautical miles, and "Visibility ten" is overly vague without specifying "statute miles" which can lead to ambiguity in interpreting the visibility conditions. Therefore, the correct pronunciation, which accurately reflects the standard used in aviation, is "Ten statute miles."