The other morning I couldn't sleep and decided to check flights in March. For one of my "normal" flights down to Florida, I was told that to return I could take a double connect back and forth, and that one of the trips between PHL and CLT (I think) would be on a 767. I thought "how cool, they must be moving the aircraft and instead of having it empty they must go ahead and throw passengers on it." But it's not there any more. Occasionally at this time I was also getting a "we don't fly between these two cities" every now and then (which is ridiculous.) Someone somewhere must have been doing some routine maintenance. Has anyone else seen this?