Message posted by Joerg (Webmaster) (Member since 10/17/2000) on November 03, 2021 at 12:45:09 PST:

We were not there for more than 15 minutes when I noticed the contrail and we did not see any chase aircraft. But if it was slightly higher or lower it may not have produced a contrail. Of course if our calculations are correct not many aircraft would be able to fly chase at 65-70k ft.

I believe at a certain altitude no ADS-B transponder would be needed. Yes, the FAA requires it, but even regular jets out of Nellis fly in civilian air space without sending an ADS-B signal.

In Reply to: Re: Possible RQ-180 sighting posted by Scott on November 03, 2021 at 5:20:02 PST:

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