I was flying some weeks ago (Cirrus SR22 G2 with Avidyne PFD and DFC90 autopilot) ; everything working OK in a climb using Auto Pilot while Autopilot went off with the normal loud beeps having this message in the PFD:
The preflight had been OK and the autopilot had engaged normally.
The PFD didn’t seem to fail. Everything kept working OK… it’s just like the Autopilot lost connection with the PFD AHRS data (DFC90 relies on the AHRS information from the PFD so if that is missing, the autopilot becomes unavailable), as the AHRS in the PFD was working OK: I tested that using the secondary analog instruments. Also, no red crosses or other messages. Just that AUTOPILOT INOP AHRS FAIL that is a direct message from the DFC90.
I cancelled my IR flight (it was a IR training session) and we went back to my home airfield… I turned everything off… restarted avionics… but even though the AHRS finished calibration normally, the message was still there so we couldn’t resume the flight.
I have access to a spare Avidyne PFD wich I asked to be installed in order to test everything some days later. After replacing the PFD, the failure didn’t occur so although at first it may look as it is a PFD problem, I have read similar issues in the Cirrus forum related to interferences and other components involved in this problem (like the magnetometer).
(Since then, problem has ocurred twice with one PFD, it never arises with the other)
First step will be performing a Magnetometer recalibration (that is a software thing to be done in the PFD, I have not re-calibrated yet after the issue) but I am a bit lost after that… Any suggestions on how to diagnose if it does not solve it? I have the feeling that the PFD is OK and sending it to Avidyne USA will not solve the problem. (At will be very costy).
(And yes… Avidyne dealers here have no clue about the problem. They will just suggest packing the PFD, charging 600€ for that, and sending it to USA)
I have an EASA PPL and an FAA piggyback. Now I want to take the american IR rating without the EASA IR because I am flying a N registered plane. Can I do this based on the piggyback certificate or do I have first to get a FAA private pilot certificate not dependant on the EASA one ?
I see where you are going but I’m sorry, I don’t have access to these numbers :D. Could you lighten up our minds (mine at least)?
The DPE I met said I don’t need adhere to the US system of 6 approaches/hold/tracking…