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Flight/contrail resumption

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Author Topic: Flight/contrail resumption  (Read 382 times)
JohnC
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« on: April 21, 2010, 09:19:12 pm »

There must be a reason,Brian .Maybe they just happen to be in a wet,cold  layer of air, it can change to dry within feet  and then no contrail  or maybe it's something to do with the usage of fuel at one altitude compared to another.
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