Originally Posted by
AANYC1981
AA lost a major corporate (maybe more?) contract to DL on this route because it's employees were sick of flying the ancient and often delayed/MX 763 on AA. That's one of the main reasons they left the market.
The reliability of AA's 767 JFK-ZRH-JFK was derisory. It became a running joke for us based in ZRH that taking AA would likely result in a 5 hour delay, and it frequently did.