> that was initially a regional airplane but is now being used for transatlantic flights. And had its engines moved to an unstable location 50 years after the

> that was initially a regional airplane but is now being used for transatlantic flights. And had its engines moved to an unstable location 50 years after the type first flew, necessitating software controls to compensate for which, paradoxically, are there so that the pilots do not need to train on the new aircraft's inherent flight characteristics yet should be disabled by the pilots under some emergency situations.