SwimmingDragonfly96
Well Known Member
Working with trutrak Andrew on this one but I’m away from the plane and wanted to see if anyone else could chime in. My autopilot occasionally porpoises when trying to capture an altitude, and occasionally while it’s turning due to GPS commands. It seems to be trim induced by the auto trim module, and when I cancel the autopilot, the plane is severely out of trim. I manually trim it and the proposing is gone upon re engaging the autopilot. I know it could be an issue with auto trim speed, but this autopilot has been installed and functioning properly for 4+ years and no settings have been changed, so I’m not sure why too fast of an autotrim would cause me problems now? Anyone experience something like this before? The builder ferried the plane with me and it occurred repeatedly throughout the flight and on every flight since. He said it had happened one other time about 6 months ago. He’s a really honest dude, and the autopilot worked great on both mine and the A&P who did the pre-buy’s test flight, so let’s just assume he’s being honest. Also, he’s a fixer, so if it was a persistent issue before, he would have certainly tackled it.