Friends - I'm having two G5s installed in my plane. The encoder will be removed, and altitude encoding will come from one of the G5s. As the avionics guy was working on removing the encoder, he found this: The pitot-static system has not been touched since it was inspected and certified in March, 2021. Needless to say, I'm not a happy camper. When I confronted the guy who did the pitot-static inspection, he denied that this was his handiwork. But, as the owner of the plane, I know for certain that the pitot-static system has not been touched since the 2021 inspection. This means one of two things - (a) as he was testing for leaks he forgot to put the system back together, or (b) this was there before he started his work, and he missed it. Given that he charged me for new sump bottles, I can't imagine he would have missed this during his inspection, since it is, literally, touching the sump bottle. As I mentioned above, when I emailed the guy who did the work, he denied it was his, and basically blew me off. I would like to file a complaint with the local FSDO. Can anyone tell me what the process is for filing a complaint? Thanks.