Originally Posted by
mvoight
the 427 flight isn’t that odd, since the original flight was USAir and even though the merger was announced well in advance, the US/AA certificates didn’t actually merge until Oct 2015, and in Aug 2015 they were still on separate certs. US had retired the flight number, but obviously AA wouldn’t have done so if not for the merger.
Not sure what the deal is with FlightAware for 11 and 77, though.