First up is a show on TLC called "Building the Biggest Sky Giant" about the A380. It airs at 7pm CDT and repeats at 10 an also this weekend.
Then after that at 8pm CDT on PBS is a National Geographic documentary on the Air Force One planes, focusing on the two 747s I imagine. There was a lengthy segment about this upcoming show on "The News with Brian Williams" last night on CNBC that was interesting. This show will repeat this weekend if you can't catch it tonight, or at least it will on my local PBS affiliate.
Good viewing tonight.