[FabHK]

From what I gather, certification requires that they can take off successfully if an engine fails during the take-off run (after V1). I doubt that they're allowed to leave with half the engines inoperational already.

[youngtaff]

With you… like this Thomson plane that had a failure due to bird ingestion during take off at Manchester - https://www.youtube.com/watch?v=9KhZwsYtNDE