UPDATE: I'm editing this post because I didn't see the other replies to the initial post. Some of the folks state you're on duty when you dead head. I would agree with that. You have to wear your uniform when you're on duty so it was a mistake for me to say you can wear civilian cloths during a deadhead. My apologies.

I don't remember if I ever wore anything other than my uniform during a deadhead, but if I did, no gate agent ever said anything to me and they would be the ones who would stop you if they saw an issue with it. I usually always wear my uniform whenever I non-rev or deadhead because of the food and drinks I bring with me. I couldn't get them through security otherwise and head of line privileges in security are worth wearing the uniform alone.

The pilots I know who don't wear their uniform usually wear it through security and then change later.

My original reply:

You can wear regular clothes during your deadhead. Dress codes for deadheading and non-reving are the same and you should be familiar with them. On jetNet, click on Travel in the upper menu and then "Traveler Information" on the left menu. When the new window opens, click on "Guest Traveler Policies." Many of your questions will be answered there and you will know where to look for this info.

There is a lot of information scattered all over JetNet. It's not always easy to find because of all the links and the enormity of the site. After five years it's still tough to find things.

As far as meeting the Chief Pilot goes, each one of them is different. It's probably better to wear your uniform if you can, but I don't know that they will really care as long as you don't look like a slob. You're not flying or performing duties so there is no requirement to be in uniform.