Off the top of my head, there's an Albertson's on El Dorado parkway that would probably hire you as a bagger/cashier. At 16, it's a little harder to find work, I think.
There's a few restaurants around that area, too, that might be looking for hosts or bussers. You can't serve alcohol until you're 18, right?
EDIT - I know you said Aviation-Related. But these are other options. You might ask Select Avionics, too, if there is some part-time work you could do for them. Also you might call Doug Saye at the NTXFC and ask him if he knows of anything. His phone number is on their website.