Boeing confirms piece of 767 found blocks from Ground Zero WAS part of the wing flap from 9/11 plane
Source: Mail
Boeing confirmed that the five-foot piece of rusted plane that was found behind the proposed location of a mosque just blocks from Ground Zero is in fact a part of one of the planes that crashed into the World Trade Center more than a decade ago.
Officials said the 5-foot piece is a trailing edge flap support structure, police said.
It is located closer to the body of the plane and helps secure wing flaps that move in and out and aid in regulating plane speed.
Investigators initially thought it was part of the landing gear because both pieces have similar-looking hydraulics.
Boeing officials told police the part came from one of its 767 airliners, but it isn't possible to determine which flight.
Read more: http://www.dailymail.co.uk/news/article-2316726/Boeing-identifies-piece-engine-blocks-Ground-Zero-wing-flap-9-11-plane.html
= new reply since forum marked as read
Maybe it was dumped there for whatever reason. 
... relative to other parts from UA175:
... deal? I recall Boeing had painted up at least 2, but I believe it was up to 5 of their 767's in military drab gray for, "testing". The National Defense University (NDU) does make mention of something going on here, "pre 9/11".
"The ESLS pre-dated 9/11 and did not account for increased flight hours due to homeland
defense air patrols and the war in Afghanistan. Usage rates increased from the ESLS-reported figure of 308 hours per year to 435 hours.10 Concerned, the Joint Requirements Oversight
Council in October 2001 validated a mission needs statement (MNS) for a new refueling aircraft, making the Air Force the lead.11 A month later, the Air Force signed the final MNS. Referencing the never-completed Air Force’s Tanker Requirements Study, the MNS stated there was
an immediate need for new tankers.12"
www.ndu.edu/press/lib/pdf/icaf-case-study/icaf_casestudy-2.pdf
So... of course a couple of Boeings crashed into the WTC towers, but every picture/video I have seen, the aircraft that hit the towers had no commercial markings, ie... were gray.
So I do not know exactly what they are admitting here that a, "piece of a Boeing 767 was found", in the WTC area. Did the parts found have identifiable serial numbers on them? Then they would be able to trace it to the individual plane sold to American or United Airlines.
