From FAA Registration Database: UAL Flt. 175. (A/C: B767-222 Tail #N612UA B# 21873, Engine Type: PW JT9D-7R4D) This has been a major problem in the 911 equation. United Airlines 767s Used only Pratt & Whitney Engines. A General Electric Engine was found at G-Zero (CFM56 or CF6 series, see pic above). Stock 767's at seas-level, cannot attain the air speeds (verified by multiple radar and video analysis) of 560 MPH at Sea Level @ a relatively level pitch attitude. Boeing/Aueronautical Engineers says this wopuld IMPOSSIBLE, because of drag and air density. The engine found at WTC is NOT from the planes that WE were TOLD hit it! They used modified/military 767s. With these, come more powerful engines. Like the General Electric CF6-series. The already strengthend Cargo and AWACs military, or E-767 (there are alt. theories here, evidence shows the poss. of "modified 767 to KC767s", as well). Add other hi-priority mod's, to critical stress points, flight control surfaces, a painfully obvious asymmetric, aerodynamic cover! (for a high-tech R/C FTS, or Flight Terrmination System, antenna on one side of the belly?). Needed for last step of guidance from a remote control operator? Considering the catastrophic incidents of September 11 2001 , certain troubling but irrefutable conclusions must be drawn from the known facts, and I get no personal pleasure or satisfaction from reporting my assessment of these facts. ** Copyright 2012 (Used by Permission) No uploading. Infringments will be sent to YouTube for removal. Please, Link to, add to faves, like, or playlist this video, thank you. We support the families of the victims getting their questions answered, and a country that can finally start to heal. We support new, unbiased, scientific investigations (which were never performed) w/subpoena powers, of the evidence of 9/11. (Note: Any advert. rev's will be used for advancement of the evidence, and new and updated videos, and our goal of independent back-up hosting and archiving) Please watch PBS Colorados new video, 9/11 Explosive Evidence - Experts Speak Out: http://video.cpt12.org/video/2270078138 Pilots for 911 Truth, AE911 Truth, 911Blogger Comments: Please no threats, implications of threats, explitives, keep on topic. no outside links, and show some basic decency and respect for others. First Amendment rights are being exercised by this channel.