I think it sounds wrong because the letter “U” is pronounced “yew”, and y is not a vowel. You would never say ‘an yurt’ or ‘an yogurt’. If it was prounced “oo”, then “an oo F O” would sound correct.
But as it is, it just sounds wrong. And whether technically correct or not, I reject it!
It’s correct when written because acronyms are representing the words the abriviate. In this case an unidentified object. If you where to speak the acronym than just “a” is correct because you are saying the letter “U” not the word “unidentified”. Does that make sense. Different rules for written and spoken.
I think it sounds wrong because the letter “U” is pronounced “yew”, and y is not a vowel. You would never say ‘an yurt’ or ‘an yogurt’. If it was prounced “oo”, then “an oo F O” would sound correct.
But as it is, it just sounds wrong. And whether technically correct or not, I reject it!
It’s correct when written because acronyms are representing the words the abriviate. In this case an unidentified object. If you where to speak the acronym than just “a” is correct because you are saying the letter “U” not the word “unidentified”. Does that make sense. Different rules for written and spoken.