All the flights except Flight 93 apparently reached their targets, without any interference from the air defense network, due to an unexplained lapse in standard operating procedures. An hour and twenty-eight minutes elapsed between the time that Boston Air Traffic Control lost contact with Flight 11 and the Pentagon was attacked.

The number of people on the flights and the seating capacities of the jetliners has been a source of some confusion. Boeing's website gives the capacities of the 767-200 and 757-200 as 181 and 200. ¹ ² However the seat charts given by SeatGuru.com for the seating configurations by American Airlines and United Airlines 757-200s and 767-200s (pictured below) show fewer seats. The following table lists the passenger capacities given by SeatGuru.com, the number of passengers indicated in the victims lists published by CNN.com. ³ ⁴ ⁵ ⁶ CNN's victims lists did not include the alleged hijackers. Whether one uses the published numbers of passengers or those numbers plus the numbers of alleged hijackers, the occupancies of all four flights appear unusually low.

flight	aircraft	capacity	passengers	hijackers	crew
Flight 11	Boeing 767-223ER	158	76	5	11
Flight 175	Boeing 767-222	166	46	5	9
Flight 77	Boeing 757-223	188	50	5	6
Flight 93	Boeing 757-223	182	26	4	7

AA 767-200 UA 767-200 AA 757-200 UA 757-200

⁷

References

1. [767] Seating Charts, boeing.com, [cached]
2. Seating Charts, boeing.com, [cached]
3. American Airlines Flight 11, CNN.com, [cached]
4. United Airlines Flight 175, CNN.com, [cached]
5. American Airlines Flight 77, CNN.com, [cached]
6. United Airlines Flight 93, CNN.com, [cached]
7. 9/11 VICTIMS LIST,

page last modified: 2014-11-14

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