 በተጓ passengersች እና በጠላፊዎች መካከል ከተደረገ ትግል በኋላ አራተኛው አውሮፕላን በሻንክስቪል ፔንሲልቬንያ ተከሰከሰ ።
The fourth plane was brought down in Pennsylvania following a struggle between the terrorists and the aircraft's passengers.