Originally Posted by kaptondave
Not meaning this as a criticism because I realize you are following common usage in glider-speak but am wondering how it came to be that way. "Spec" is a term often used as a short for specification. When a plane gets far away it becomes a speck. Just curious.
That is an example of one of the things that makes English challenging to learn as a second language. There are words that sound the same, but are spelled differently and have different meanings. Another example is "wood" and "would". I suppose if you really wanted to be specific, it could be argued that spec'd out was being used correctly. In that case it would not be the plane that was being pushed beyond specifications, but the eyes of the pilot instead.