[central_va]

If there was something on board that could be triggered mechanics certainly cannot keep their mouth shut! We would know!!!

Of course you would know. So a contrail can stop like that, instantaneously?

[Bigbrown]

Absolutely!! Tell you what, the next time I do a daylight pacific crossing and get into the same situation (that have experienced 100’s of times) I’ll whip out my phone and film it. I’ll get it to you somehow. I’m Anchorage based and 95% of my flying starts out heading to Asia.