A 6-month TMZ investigation raises critical questions ... was there a fifth aircraft focused by hijackers on 9/11? The flight attendants and pilot aboard United Flight 23 imagine they had been certainly focused, and so they make their case tonight on FOX at 9 PM. United 23, a 767 plane, was scheduled to depart JFK at 9 AM, certain for L.A. Six passengers aroused the suspicion of flight attendants for numerous causes. Amongst them ... they had been satisfied one of many passengers was a person disguised as a lady.