When is it authorized to remove your ACU top when in uniform?

The only time I'm allowed to take my operational dress uniform (ODU) top off when I'm in the office and the air conditioning breaks. If I remember correctly the only time in the army that it's allowed is when you on an outside detail in the heat.

In the immediate duty section, sure. If it is in the public eye, you should really wear the uniform completely and properly.

First I would take a picture, and I might even record the situation incase one of them reports me and make a false statement. I would look oddly at this lot of commissioned officers. I would simply ask, "Why do you all have you tops off". Knowing that any answer would not make it okay I would simply state, "You all need to put on your tops per Army regulation AR 670-1". Then I would carry on and enjoy my personal time.

I can't quote a reg, I've tried searching for an answer. Anecdotally, aside from command/supervisor discretion, I'm only finding examples in the context of a work detail, and most of those are from my time in and before, so pre-2005.

Sorry

So can anyone pull out the reg? Because in US MC eating with your top off is ok, and MC is the most professional branch in terms of uniformity. So explain how is it "unprofessional" to take the top off while dining in?

No It should have never been removed in the first place.

That just boils down to poor judgement and unfortunately poor leadership, one could also add a blatant disregard for regulations.

Thats a big no.

No

If it is part of your issued uniform and you are on duty then you need to be wearing a complete uniform. If you happen to be outside then the headgear needs to be on as well. If the complete uniform is not being worn then you are out of uniform.