?????????????????
??????2??15?????????? ???????,??????14???????????????????????,??????(NTSB)???????????????????????,?????,?“?”??????????????????????,???????“???”?
?????????????????????,1???29?,?“??????????????????”??,??????????????????,??????????????????????,???????67??
??14?????,“????????????”??,???????????????????????,?????
??????????,?,????“???????????”???,???????????????????????????,??????,???
??,?????????????,????“???”?,????????,“???”?????????????
??????,??“??”??,?????,?,????
????,?????,?????????????????????????,???????????????
?,??????????????278???(85 ???),??????????????????,???,“?????????????????”
???????????????????????:???