EAA493 Mailing List: Re: Couple of ADS-B events

[Gerald Hatch (gf_hatch]

This may answer one of them, the shadowing.

Since you do not have ADS-B Out, the traffic picture is the result of another aircraft "pinging" (not really pinging but just requesting) traffic info relative to his position and he would be seeing you. The difference in position maybe the delay in the system. The 60K ft and 1 knot thing, I have no idea other than a balloon.

Gerry 

PS. All of the traffic you saw on the screen was the result of another airplane with ADS-B out getting the info relative to his area of coverage which in those cases included you.

On Thursday, August 14, 2014 4:34 PM, Joe Christian <k5hmd [at] uppercanyon.us> wrote:

Judy and were flying to Ruidoso on Tuesday and I started receiving ADS-B traffic information on several aircraft in the Midland vicinity.

 

At any rate, when I was northwest of Midland, I noticed I was being closely shadowed.  The other plane was close behind me, and about 400’ lower.  I would guess a Customs pilot was getting some practice.

 

The other event is not easily explained.  As I got close to Roswell, I noticed a “airplane” right over the ADS-B tower.  It was at an altitude of 60,025 feet and had a groundspeed of 1 knot.   Don’t have a clue what this one was???  Anyone venture a guess?

 

Joe

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