UA 803 is operated by an PMUA 772 (3 class setup). From what I remember the PMUA 772s were outfitted with wifi before the PMCO 772s so it may have the older connectivity or may have been upgraded but the fleet page doesn't denote which system is installed on it. I have asked a MOD to move this to the UA subforum as someone may have access to more detailed info. Some planes do service specific routes routinely but routes see a different plane each day for fleet utilization maximization so it's harder to predict. accurately.