This morning I got a call from my mom who was coming back from PHL on US Flight 255 (On March 23). She called and said that the flight was on a 767! Usually that flight is on a 757. Why the equipment change? Where is the 767 going to next? Anyone have any information on this? I was interested to hear about a US widebodyn back in PIT for regular scheduled passenger flights. Although I'm sure it will not be a frequentn thing, I would like to know why this happened.