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I'm hoping someone can tell me where a Dynon Skyview HDX dual-display system is grounded in a 2018 RV-12 ELSA powered by a Rotax 912ULS engine.
I'm asking because after a year and a half of trouble-free operation, my Dynon HDX has been failing on virtually every flight, sometimes in as little as three minutes after takeoff, other times after a half hour. When it fails, the left half of my displays blink "ADAHRS Fail" and then "Attitude Recovering"; and the moving map says "Position Unknown." Several times, my altimeter and airspeed indicator have failed too. The altimeter has shown me at 50,600 MSL or below sea level, when I'm actually at 3500 or 4500 feet. And the airspeed indicator has shown me as fast 205 kts and as slow as 30 kts.
Dynon has been as helpful as it can be. It tried to repair my original ADAHRS, and when that failed on the first post-repair flight, it sent me a replacement ADAHRS and when that failed it sent me a second replacement ADAHRS. It also replaced my GPS. When none of these steps worked, Dynon concluded that I must have a short in the system, somewhere. But Dynon couldn't tell me where to look, because Dynon isn't familiar with the wiring pattern on an RV-12.
I took the plane to a shop with an avionics specialist. They didn't find a short, but did replace my battery which they said was failing, but that didn't fix the problem.
Last week, Van's issued a Service Letter telling RV-12 owners to do a Dynamic Propeller Balance. Van's said that if the balance is not done, damage could be done to the plane, and that the EFIS and Pitot systems may fail. I thought the Service Letter finally identifed my problem, and I had a Dynamic Propeller Balance done yesterday. I test flew my plane this morning, and the Dynon failed yet again, just three minutes into the flight.
The latest suspect is corrosion, because my plane is at Santa Monica Airport, less than two miles from the ocean. Two separate pilots have pointed to corrosion as the likely culprit, one of them suggesting that the likely spot is where the Dynon system is grounded.
I didn't build the plane, so I didn't wire it, and I don't know where the Dynon system is grounded, or even how the system is wired. If anyone can tell me where to look for the ground point, or where else to look for corrosion, I'd be most thankful.
I'm asking because after a year and a half of trouble-free operation, my Dynon HDX has been failing on virtually every flight, sometimes in as little as three minutes after takeoff, other times after a half hour. When it fails, the left half of my displays blink "ADAHRS Fail" and then "Attitude Recovering"; and the moving map says "Position Unknown." Several times, my altimeter and airspeed indicator have failed too. The altimeter has shown me at 50,600 MSL or below sea level, when I'm actually at 3500 or 4500 feet. And the airspeed indicator has shown me as fast 205 kts and as slow as 30 kts.
Dynon has been as helpful as it can be. It tried to repair my original ADAHRS, and when that failed on the first post-repair flight, it sent me a replacement ADAHRS and when that failed it sent me a second replacement ADAHRS. It also replaced my GPS. When none of these steps worked, Dynon concluded that I must have a short in the system, somewhere. But Dynon couldn't tell me where to look, because Dynon isn't familiar with the wiring pattern on an RV-12.
I took the plane to a shop with an avionics specialist. They didn't find a short, but did replace my battery which they said was failing, but that didn't fix the problem.
Last week, Van's issued a Service Letter telling RV-12 owners to do a Dynamic Propeller Balance. Van's said that if the balance is not done, damage could be done to the plane, and that the EFIS and Pitot systems may fail. I thought the Service Letter finally identifed my problem, and I had a Dynamic Propeller Balance done yesterday. I test flew my plane this morning, and the Dynon failed yet again, just three minutes into the flight.
The latest suspect is corrosion, because my plane is at Santa Monica Airport, less than two miles from the ocean. Two separate pilots have pointed to corrosion as the likely culprit, one of them suggesting that the likely spot is where the Dynon system is grounded.
I didn't build the plane, so I didn't wire it, and I don't know where the Dynon system is grounded, or even how the system is wired. If anyone can tell me where to look for the ground point, or where else to look for corrosion, I'd be most thankful.