Plane Speeds Were Not Possible.....Only A Fiction

[Peter Lemkin]

On February 7, 2002 the NTSB published a Radar Data Impact Speed Study for UA175 and AA11. It is currently downloadable from here.

In it, the author, Daniel R. Bower, Ph.D. of the NTSB writes of UA175:

As the aircraft made its final descent to 1000 feet, it accelerated and impacted World Trade Center tower #2 at approximately 510 knots groundspeed.

At this low altitude 510 knots groundspeed is equivalent to 510 knots Calibrated Airspeed which equates to roughly 587 mph.
Taking into account the Design Diving Speed of 420 knots Calibrated Airspeed, this claims that a Boeing 767-200 could have exceeded the Design Diving Speed by 90 knots and remained intact and controllable.
I seriously don't think that is possible.

I'm not a pilot nor an aeronautics engineer, but I am trained as a scientist and it doesn't seem logical to me either - more important it didn't seem believable to those pilots who had flown these types of planes and some who had even flown those very planes!......and WERE knowledgeable about aircraft and aircraft design and what is and is not possible or likely. 9-11 is a series of unlikely to impossible events one after another, just like 11-22-63...in my mind for the same reasons.

That said, a remote controlled plane or 'special' plane might have different capabilities. It should be possible to determine the exact speed from the FDR and some calculations based on the photos of the crash. I don't trust the government to give us the answers on any of this....:flute: