During the September 11 attacks , the then-five-story building at 45 – 47 Park Place , between West Broadway and Church Street , was severely damaged . When United Airlines Flight 175 struck the South Tower of the World Trade Center , part of the plane 's landing gear , engine and fuselage came out the north side of the tower and crashed through the roof of 45 – 47 Park Place , and through two of its floors . The plane parts destroyed three floor beams , and severely compromised the building 's internal structure . The damage was not immediately noticed during an exterior assessment . It was later discovered during an interior assessment . In April 2013 , the New York Police Department announced that surveyors inspecting the building had discovered a wide piece , long airplane part complete with Boeing identification number wedged in an wide alley between 51 Park and 50 Murray Street . Initially officials thought it was part of the landing gear but Boeing confirmed it was the trailing edge flap actuation support structure of an airplane flap from a Boeing 767 , the type of jet which hit both towers . A photograph of the piece initially showed a rope around it . Police said the rope was used by an officer who lassoed it to see the identification number . Boeing could not say which specific plane it was from
United Airlines Flight 175
United Airlines Flight 175
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