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Reno's fleet was integrated in the short-term, hence the white-birds.
However, their aircraft were all of different varients including a mix of MD
-82's, 83's, 87's, and '90's. All have many differences from AA
-80's and were not cost effective to keep in the fleet. There only 5 MD
-90's anyways, and those aircraft were subject to many maintenance issues.
All were removed from the fleet post-9/11.