I remember when I was less then 10, my family and I would fly ATL-MIA-GIG-GRU every year since there was no direct ATL-GRU service back then. When I was around 5-7 (1986-88), I distinctly remember waiting at the gate at MIA and looking at a Pan Am 747 that we were going to board for GIG. I asked my mom if she remembered flying Pam Am to GIG, and she said we never flew on Pan Am. I can remember for a fact that we flew on a 747, because I remember looking at the staircase when we were boarding and asking my mom if we could go upstairs. I'm not completely sure about it being Pan Am, but I could have sworn that we did.
My question is: did Pan Am fly MIA-GIG with a 747? If they didn't, what airline had 747 service for MIA-GIG in the 80s?