Recently at IAH we saw a 772 going in a weird direction compared to other landing traffic… after further investigation we realized it was not landing, instead going to SFO. See picture shown
I tuned into ATC to see what was going on and after about 5 min we heard “UA508 declaring emergency” reason unknown as of now and tower gave vectors to land runway 15L which is not a normal landing runway if you know anything about Houston. I am still trying to figure out what caused the emergency. has anyone heard anything?