When discussing the issue of the RJX Project cancellation earlier this year, a LAME told me that Sept 11 was used as a convenient excuse and further suggested that the certification trials that were underway at the time, indicated that the engine/s weren't performing as promised and that consequently the aircraft wasn't going to meet its perfromance guarantees.
I've also heard that, allegedly, the RJX wouldn't have been able to use an aerobridge, as the #2 engine cowling was too far forward!
