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Location: UFOUpDatesList.Com > 2004 > Jun > Jun 1

Re: Mexican UFO Aircraft Speed - Sparks

From: Brad Sparks <RB47x.nul>
Date: Mon, 31 May 2004 18:53:55 EDT
Fwd Date: Tue, 01 Jun 2004 00:42:06 -0400
Subject: Re: Mexican UFO Aircraft Speed - Sparks

>From: Barry Taylor <stingray.nul>
>To: <ufoupdates.nul>
>Date: Sun, 30 May 2004 14:54:40 +1000
>Subject: Mexican UFO Aircraft Speed

>Information obtained when questioned on relative airspeed of the
>aircraft that videoed the Mexican UFOs.

>This is how a pilot in charge of our local airport explained it
>to me.....

>1. If an aircraft is flying at 200mph in a 200mph tail wind, the
>air speed of the aircraft registers as 200mph. But the air speed
>relative to a ground based observer would be that the aircraft
>is flying at 400mph.

>2. If an aircraft is flying into a 200mph headwind, the aircraft
>airspeed is still 200mph, but to the ground based observer, the
>aircraft would appear to be stationery.

>The Mexican air crew reporting their air speed was the actual
>air speed of the aircraft, unrelated to the outside speed of the

>This means that no matter how fast the air currents were
>blowing, and in which direction, the air speed of the aircraft
>would still be reported as 200mph. Only a ground observer would
>notice any difference in the speed of the aircraft in the above

>If the objects were moving with a 200mph wind, and the aircraft
>was flying at 200mph, than the objects may appear to be moving
>faster than the aircraft to the pilots observing, depending on
>the wind direction relative to the flight direction of the

>Relativity comes into play when the crew "assuming" they are
>flying at 200mph relative to the speed of the objects.

>To a ground based observer, they may measure the real time speed
>of the objects and aircraft totally different to what the air
>speed of the crews aircraft registers their speed.

>Therefore, the speed of the objects calculated by the air crew,
>would be different to ground radar calculations of their speed.

>Barry Taylor

Sorry but there would be no 200 mph air currents down at the
Mexican aircraft's low altitude of 3,500 meters or 11,500 feet,
as there was clearly no hurricane going on and the jet stream
does not dip that low in altitude or in latitude over the
Yucatan.  If it did where is the weather records to prove 200
mph winds on March 5, 2004, and in that location?

Also the aircraft's GPS positions latitude-longitude prove where
it was located and that it was flying at about 230 mph actual
ground speed, regardless of winds or any indicated air speed.

Just take the lat-lon figures off the screen and calculate it
yourself, prove it to yourself, just make sure you take them at
least a minute or so apart to give the instruments time to
properly update positions, and watch for when the plane turns
(at 1652 and slight adjustments later).

As I understand it the APS-143 radar calculates actual ground
speeds and headings of targets irrespective of winds that may or
not be be adding 'tail wind' or 'head wind' to the speeds.

Brad Sparks

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