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Static port coverec for zero airspeed check as well? Also at lower speeds, airspeed erratic, I wonder if it's an AOA issue or static port placement issue? Check for leaks, go from there. One thing at a time

Dynon replied the inflight cal is NOT necessary. update ——- Went and redid just the ground calibration. On the runway for takeoff and landing at that airport and my home airport the heading was within 1 to 2° of charted runway heading. (Previously 10° off after in flight cal) Winds aloft...

Did you do the zero airspeed calibration on the ADAHRS too? might settle the compass too since it's not just a basic ahrs.

Yup that's next. Ground cal and see if errors remain. More data! More excuses to go flying. Woo!

Cannot run wires to either wing. Tail would have to build a special spot back there and I can’t get back there, also the fabrication would be a huge problem. Plus cables would still run next to battery cables for a couple feet.

Where it runs out is the panel there is no other place to put stuff. It’s this or nothing for real. Dynon recommends doing just the ground cal, see how that does on its own. And go from there.

Doesn’t work. In flight calibrations both been over 100. Compass not aligned after. It’s worse.

Brand new GPS2020 antenna installed last winter. Thanks for the input everyone. This is very helpful You really don’t need the inflight calibration?

Per Dynon support I redid the ground cal. When I took the runway for takeoff the heading perfectly matched the charged runway heading. did the inflight cal and when I landed the heading was over 10° off of the runway heading. after the inflight cal I did four compass points to grab winds...

Network cable runs with battery cable for a couple feet. Email sent. Thank you.

Wingtip and tailcone are no-go’s. would the induced magnetic fields only effect the magnetometer or could they effect the wiring to the magnetometer and induce error that way? Dynon support has a calibration hack I’m going to try. If that doesn’t work then it’s EMF/RFI that I cannot escape...

ADAHRS is top center behind the panel. Remote is under passenger seat. Dual PMAGs.NGK plugs. Wires are from EmagAir. No compass change running on one mag all wiring to/from the battery runs down the keel of the plane. aircraft was built as a VFR race plane. Might be nothing I can do...

---Yes, ground cal done with flight conditions, all systems running. No compass interference from boost pump, fuel transfer pumps, strobes (AeroLED), pitot heat, landing lights, transponder (IDENT), comm 1 or 2, flap motor, gear motor, intercom. All lights are LED. ---Alternator is a B&C...

Talking with support about this. Putting it out to the group braintrust. Lancair 360. Dynon Skyview system, dual 7" screens, AP panel, radios, all of it. Engine has dual PMAGs. Using compass internal to ADAHRS. Winds aloft in gross error, compass cal did nothing to help. Contact Dynon...

Sounds like it's not getting power and then being powered up by button one and power is from backup battery and not the bus. CB pushed in? Does the unit have EMS attached? Should read bus voltage, on the backup battery it will read weird voltage.

Glitch in the matrix? You try turning it off/on? Were you able to eventually get it on with the master switch?

It would make sense for it to. Dynon support will know for sure.

Skyview Autopilot inflight tuning guide, page 1-1. The SV-AP-PANEL is enabled when AP CONTROLS are set to EXPERT mode. For tuning procedures performed in SIMPLIFIED mode, the buttons on the SV-AP-PANEL will not be active. Since the "level" button is on the external AP Panel it will not...

Nothing in the manual references engine start. Mine is on during startup in my Lancair, no abnoramlities ever.

You could always grab something like this - Audio Cables They have ones for GoPro, smartphone, digital recorders.