Lately I've been flying the TBM quite a bit and appreciating how detailed the simulation is. So far any of the problems flying it were due to oversights or lack of preparation on my part. However yesterday something happened for which I have no explanation:
I was taking a new airframe on a ferry flight across the North Atlantic. On the second leg from EGPF (Glasgow) to BGGH (Nuuk), after four and a half hours of an uneventful flight there was a single warning ping sound and all flight instruments went dark. I was over central Greenland at 30000 ft. I immediately turned on oxygen and got to a much lower flight level. It turned out the engine was still running (just from the sound and performance). With a lot of effort I was able to still fly the plane to Nuuk with the help of the AVITAB, having only the ESI and the Standby Compass as flight instruments. The autopilot was not available either, I was not able to get a clear sense of whether the electrical trims were working.
I checked the fuses, they were all in and I flipped a lot of switches to see if the instruments would come back on - nothing! When finally approaching Nuuk I was surprised to hear AFIS come on - since the intercom panels were also dark I had no way to check or set other frequencies.
On approach I did not do a fly-by (visual landing gear check) since I had no tower frequency, I was not sure if the gear was down and tried using the landing gear extension hand pump as well. (I did the emergency gear lowering procedure incorrectly, I now know, but before that the gear had not come down either.) I chose to land immediately, gear or no gear, since I assumed fuel might be low from not having been able to fly in a straight line and at lower altitude with unknown power settings. (I was right, on the ground it turned out there was hardly any fuel left.)
It turned out the gear was not down and I did a belly landing with damage beyond repair to the airframe. I have no idea why this incident happened. I checked the battery after the crash, and it was in a normal loaded state. In the TBM900_Log.txt I see "Component Pilot's Primary Flight Display has failed suddenly due to an internal electrical fault" and a lot more similar lines.
Unless I find the error the plane will not feel save for long trips any more. So I would appreciate any input.
Thank you!
Attached is the TBM900_Log.txt (The trouble seems to start at 2021-07-03 00:49:14)
TBM900_Log.txt