Originally Posted by
PilotBases
OO bought 700s that flew for Delta Connection at Comair and they are now 550s for United. For planes that they don’t need, better to make a little cash. Replaced inside scope with 175SCs when the Gojet tails went offline.
And a lot of the 700s that started getting converted to 65 seat AA around the start of 2020 were formerly DL and UA. You can see the blue paint underneath where the stab trim wears away at it. And all the seat armrests are still a deep shade of blue too. If its a 7XXSK tail number, most likely it was United originally. Lots of EV flying around in AA colors, or in Skywest livery in the AA system. Still a few generic with 70 seat configs, but most are 65 now.