What's hanging off the vertical stabilizer?

[Chuck Dreier 75]

I've done a reinstall of P3D and my PMDG fleet and now have something hanging off the top of the vertical stabilizer.  It looks like it's hanging by a wire and has a red bob or something like that attached.  What is it and how do I get rid of it?  I don't see anything in my aircraft setup, but maybe I'm getting blind.  Thanks!!!!

[CaptKornDog 286]

Part of the flight test kit that can be disabled via aircraft options.

[pete_auau 1,163]

also mentioned in the introduction manual as well, wonder what else is mentioned in the introduction manual:smile:​

[docdon 4]

may be in the intro. and may be an option, but mine is there in the 739 and it's opted off.  How 'bout that?

[HighBypass 2,339]

It's a Boeing seed pod. When the jetstream is just right, it breaks off from the aircraft, lands, then, over a few months, germinates & grows into another 737.  Other species are available:-

 

 

 

EDIT: Sorry Chuck! OK enough of the ribbing. I believe it's a static pressure line to get readings which aren't influenced as much by the aircraft it's fitted to.