A document from the Port
Authority of New York and New Jersey (PANYNJ) indicated that the
impact of a Boeing 707 aircraft was analyzed during the design stage
of the WTC towers. The analysis concluded that such a collision
would result in only local damage which could not cause collapse or
substantial damage to the building.
supporter Eduardo Kausel of MIT argues that the 707 and 767 are comparable
aircraft, and thatfire caused the