I have recently installed Horizon Instruments P1000 digital tachometers in my PA30 Twin Comanche. I need to complete a Form 337, but I can’t find the STC paperwork that was supposed to be with the instruments. I have been calling Horizon Instruments all week, but they are not answering, and their phone goes to the answering machine. Does anyone have this paper work or any ideas?
Thanks!
Dave
Thanks!
Dave