[RaceBannon]

proving my point

look how thin it is next to the jet exhaust

then, look at it MILES back, it is much wider but CLEARLY distinctive of each engine!!

I been around planes many years, grew up near an airport, worked in aviation in the Marines and for 11 years afterwards and am back in aviation now, so, try someone else to convince

[Tommyjo]

MD-11 producing a massive contrail.

Copy and past if link doesn't form

http://www.airliners.net/photo/Unknown/McDonnell-Douglas-MD-11/0613921/L/

You also have to understand that this MD-11 was being imaged when it was producing a persistent contrail. The stabilized helo camera was detecting this MD-11 at extreme range. At no point could the optics zoom in close to this aircraft. It was always at extreme range. At that point the MD-11 was still up at 39,000 feet.

[DontTreadOnMe2009]

Re: the several very nice unrelated contrail photos:

proving my point

look how thin it is next to the jet exhaust

then, look at it MILES back, it is much wider but CLEARLY distinctive of each engine!!

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Right.