It would not surprise me but 2 agents have now told me it is due to crew issues with the incoming flight to PHL. I received email and text notification at 6:37 am today but as I said, the agent in DAY confirmed the delay around 5:15 or so this morning, that is once I provided her the incoming flight #.

This route had been using a 767 but late last week they went back to the 757 and even went back and forth a couple of days, alternating between the two. The nice thing with the 767 was it overnighted here in PHL so there was no chance of the incoming flight being delayed like this.

Now, AA HAD to know last night there was going to be a crew issue with the incoming flight top PHL and they did nothing about it.