Flight 77

The flight number 77, supposedly the plane that flew into the Pentagon and vapourised raised a few questions.... I thought what if it did not exist in the first place, why flight 77... so I googled code 77 and the result was surprising. It ...was an aviation code, stranger still " Indicate any FAR Part 77 Imaginary Lines that impact the construction areas." ..imaginary, impact and construction in one short sentence. when i tried to copy the link I got a warning message...anyone ever get one of these? coincidence maybe, strange certainly

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