The helicopter downing caused the largest number of u. s.casualties of any single incident in a decade of war .
这次直升机被击落造成的美方伤亡人数是10年战争期间单次事件中最高的。
So a trial in the hague could not investigate the downing in 1988 of an american passenger plane over scotland , or the killing of 1200 inmates in a libyan jail in 1996 .
